| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 S. Petersen's Field Guide to Creatures of the Dreamlands | 8-63 |  S. Petersen's Field Guide to Creatures of the Dreamlands | CHA5107 | 1989 | Chaosium | Call of Cthulhu (Dreamlands)
| |
| S. Petersen's Field Guide to Cthulhu Monsters | 6-63 | S. Petersen's Field Guide to Cthulhu Monsters | CHA5105 | 1988 | Chaosium | Call of Cthulhu (Classic)
| |
 A Sabbatical in France | Adventure (F) |  House of Tindalos | | n/a | Self Published | Mythos
| |
| Sabrina Phillips | Ally (F) |  Sesqua Valley | | n/a | Self Published | Mythos
| |
 Sack of Uncertainty | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
 Sacraments of Evil | 69-89 | Sacraments of Evil | CHA2345 | 1993 | Chaosium | Call of Cthulhu (Gaslight)
| |
| The Sacred Cod | 31 |  The Arkham Gazette | 2 | Nov 2013 | Sentinel Hill Press | Call of Cthulhu (Classic)
| |
| The Sacred Flame of Bubastis | 117-125 | Worlds of Cthulhu | 4 | Jan 2006 | Pegasus Press | Call of Cthulhu (Classic)
| |
| Sacred Indian Altar | Location (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Sacred Indian Temple | Location (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Sacred Waters | 110-113 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu
| |
| Sacrificial Altar, Of Star-Born Stone | Support (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
 Sacrificial Fire Mini Expansion | | Sacrificial Fire Mini Expansion | | 2019 | Renegade Game Studios | Gates of Delerium
| |
| Sacrificial Gate | Event (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sacrificial Gate | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sacrificial Gate | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sacrificial Gate | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sacrificial Gate | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sacrificial Offerings | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sacrificial Offerings | Event (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Safari Hunter | Character (F) | Ancient Horrors | CT17 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Safe House | Support (F) | The Cacophony | CT39 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Safe House, Dark | 2014 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Safe Space | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Safe World | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Safely Behind Bars | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Saffron Book | 5 | The Unspeakable Oath | 22 | Jan 2013 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Sage Advice | |  Chaosium Digest | v18n07 | Feb 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Sage Advice | 43-44 |  Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sage Advice | 1997 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sages | B:12-13 |  Call of Cthulhu | CHA2301-X | 1983 | Chaosium | Call of Cthulhu (Classic)
| |
| Sages | 106-107 |  Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| Sages for the Game | B:89 | Call of Cthulhu | CHA2009-X | 1981 | Chaosium | Call of Cthulhu (Classic)
| |
| Sailing on the Sellen River | 62-73 | Dreams of the Yellow King | PZO90111 | 2016 | Paizo Publishing | Pathfinder
| |
| Sailing Stormy Seas | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Sailing to the Moon | 27-33 | The Dreaming Stone | CHA2368 | 1997 | Chaosium | Call of Cthulhu (Dreamlands)
| |
| Saint Bartholomew's Abbey | 3-21 | The Abbey | CHA0088 | 2004 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Saint Vincents' Hospital | Location (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Salem 1692 | 13-26 | Devil's Children | | 2004 | Pagan Publishing | Call of Cthulhu (Now)
, Call of Cthulhu (Strange Aeons: 1692)
| |
| Salem 1692 | 13-23 | Devil's Children | PAG1001 | 1993 | Pagan Publishing | Call of Cthulhu (Strange Aeons: 1692)
| |
| Sally Pearson's Bungalow | Location (F) | Sesqua Valley | | n/a | Self Published | Mythos
| |
| Salo's Glory | | Salo's Glory | FXC-11 | 2020 | Stygian Fox | Call of Cthulhu (Strange Aeons: Future)
| |
| A Salt On Cop House | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Saltwater Inheritance | | The Saltwater Inheritance | | Jun 2019 | Chaosium | Call of Cthulhu (Classic)
| |
| Salvatore Neri | Character (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Salve, Citizens! | 7-14 | The 7th Edition Guide to Cthulhu Invictus | GGP1801 | 2018 | Golden Goblin Press | Call of Cthulhu (Invictus)
| |
| Sam Archer | Character (F) | The Wailer Below | CT37 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sam Stingey's Cabin | Location (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| Samantha Grace | Character (F) | The Thing from the Shore | CT23 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Samantha Heidrichs | 77-83 | Utatti Asfet | CHA2360 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Sample Adventure: The Dark Heist | 38-48 | Dark Mirror | CHA0338 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Sample Fire-Arms and Explosives | | Keeper's Kit | CHA5110 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Sample Gear and Prices | 216-221 | Call of Cthulhu | CHA2336 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Sample Mythos and Supernatural Entities | 84-91 | Harlem Unbound | 1 | 2017 | Darker Hue Studios | Call of Cthulhu (Classic)
, Gumshoe
| |
| Samuel Winsor | Ally (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Samurai - Firearms and Bestiary | | Samurai Firearms and Bestiary | | Jun 2018 | Chaosium | Call of Cthulhu (Strange Aeons: Sengoku Period)
| |
| Samurai - Weapons of Feudal Japan | | Samurai - Weapons of Feudal Japan | | Mar 2018 | Chaosium | Call of Cthulhu (Strange Aeons: Sengoku Period)
| |
| Samurai: A Monograph | | Samurai: A Monograph | | Mar 2018 | Chaosium | Call of Cthulhu (Strange Aeons: Sengoku Period)
| |
| San Giorgio on Alga | Support (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| San Marco Basilica | Support (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| San Rafael | 193-208 | Down Darker Trails | CHA23151 | 2017 | Chaosium | Call of Cthulhu (Wild West)
| |
| San Servolo | Support (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Sanatorium | 72-89 | Mansions of Madness | CHA23110 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Sanatorium | 70-88 | Mansions of Madness | CHA2327 | 1990 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanctify the Stone | Event (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
 Sanctum | 74-75 | Mortal Remains | WDF23002 | 2009 | WildFire Games | Framewerk (CthulhuTech)
| |
| Sanctum of Twilight | | Sanctum of Twilight | MAD26 | 2018 | Fantasy Flight Games | Mansions of Madness
| |
| Sand Dwellers | Monster (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Sandgrown | 101-109 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu
| |
| Sandgrown | 38-48 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu
| |
| Sands of Time | 50-66 | Curse of Cthulhu | CHA3306 | 1990 | Chaosium | Call of Cthulhu (Classic)
| |
| The Sands of Time | 77-84 | Day of the Beast | CHA2374 | 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Sands of Time | 30-36 | The Fungi From Yuggoth | CHA2305 | 1984 | Chaosium | Call of Cthulhu (Classic)
| |
| Sandy Duncan | Ally (F) | Scooby Doo Set 1 | | n/a | Self Published | Mythos
| |
| Sandy Petersen | Ally (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Sandy Petersen's Rules of Game Design | | Ye Booke of Tentacles | 4 | 2003 | The Chaos Society | Call of Cthulhu (Classic)
| |
| The Sanguine Watcher | Character (F) | Shadow of the Monolith | CT52 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sanguis Omnia Vincet | C:165-202 | Horror on the Orient Express | CHA23130 | 2014 | Chaosium | Call of Cthulhu (Invictus)
| |
| Sanity | 78-89 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| Sanity | B:23-27 | Call of Cthulhu | CHA2009-X | 1981 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity | A:26-31 | Call of Cthulhu | CHA2301-X | 1983 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity | 28-36 | Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity | B:16-17 | Call of Cthulhu Starter Set | CHA23158-X | 2018 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity | 64-70 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Sanity | 154-169 | Keeper Rulebook | CHA23135 | 2015 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity and Insanity | 75-87 | Call of Cthulhu | CHA23106 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity and Insanity | 46-52 | Call of Cthulhu | CHA2336 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity and Insanity | 68-79 | Call of Cthulhu | CHA2386 | 1999 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity and Insanity | 68-74 | The Laundry | CB71200 | 2010 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Sanity and More Sanity | | Chaosium Digest | v02n06 | May 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity and Sorcery | | Sanity and Sorcery | | 2018 | Self Published | Lasers and Feelings (Sanity and Sorcery)
| |
| Sanity and Spells | | Chaosium Digest | v02n05 | May 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity Check Promo Card | | Sanity Check Promo Card | | Feb 2020 | Steve Jackson Games | Munchkin
| |
| Sanity Rules | | Chaosium Digest | v01n09 | Mar 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity Tracker | | Sanity Tracker | | May 2019 | Chaosium | Call of Cthulhu (Classic)
| |
| Sanity, Insanity and Roleplaying the Investigator | 20-32 | Taint of Madness | CHA2354 | 1995 | Chaosium | Call of Cthulhu (Classic)
| |
| Santa | | Santa | | Dec 2019 | Chaosium | | |
| The Sap Keeps Running, Part 1 | 39-42 | The Primal State | CHA0344 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Sap Keeps Running, Part 2 | 43-46 | The Primal State | CHA0344 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Sap Keeps Running, Part 3 | 70-72 | The Primal State | CHA0344 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Sap Keeps Running, Part 4 | 108-124 | The Primal State | CHA0344 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Sara Connors | | Mists of the Aeons | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Saracenic Rituals | Support (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sarah | Ally (F) | Sesqua Valley | | n/a | Self Published | Mythos
| |
| Sarah Van Shaw | Character (F) | Words of Power | CT54 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sarah's Friends | 5-19 | Protodimension | 6 | Aut 2010 | Kinstaff Media | Call of Cthulhu (Now)
| |
| The Sarcophagus | 210-217 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars)
| |
| Sarkomand | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Sarkomand | 30-46 | The Sense of the Sleight of Hand Man | APU8001 | 2013 | Arc Dream Publishing | Call of Cthulhu (Dreamlands)
| |
| Sarnath | Support (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sarnath | 228-247 | The Sense of the Sleight of Hand Man | APU8001 | 2013 | Arc Dream Publishing | Call of Cthulhu (Dreamlands)
| |
| Sarnath Sigil | Spell (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Satanists on the Graeg | 41 | The Black Seal | 1 | Nov 2001 | Brichester University Press | Call of Cthulhu (Delta Green)
, Call of Cthulhu (Now)
| |
| Satchel of the Void | Support (F) | Initiations of the Favored | CT42 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Saturnalia | Event (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Saturnian Wine | Support (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Saucer Attack 1928!: The Dunwich 'Horror' | 4-5 | The Unspeakable Oath | 21 | Jul 2012 | Pagan Publishing | Call of Cthulhu (Atomic)
| |
| SaucerWatch | 112-125 | Delta Green | PAG1005 | 1997 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Savage Dream | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Savage Lands | 170-193 | Secrets of Kenya | CHA23109 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Savage Practice of War | 96-114 | Investigator's Guide to the Secret War | MPS01031CS | 2013 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
 Savannah | 04:00 |  Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu
| |
| Savannah, Georgia | 51-80 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu
| |
| Save Innsmouth | 1-8 | Save Innsmouth | | 2016 | Just Crunch Games | The Cthulhu Hack
| |
| Save the Planet | Adventure (F) | Eric Johnson Mythos Collection | | n/a | Self Published | Mythos
| |
| Save the Whales! | 89-91 | Worlds of Cthulhu | 4 | Jan 2006 | Pegasus Press | Call of Cthulhu (Classic)
| |
| Save the World Deck | | Thastygliax's Vault | | n/a | Self Published | Mythos
| |
| Save the World! | | Chaosium Digest | v21n04 | Aug 1997 | Chaosium | Mythos
| |
| Save the World! | Adventure (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Save the World! Deck | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| Savio Corvi | Character (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sawbucks | 6 | The Unspeakable Oath | 19 | Mar 2011 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Scales of Time | | The Scales of Time | | Dec 2017 | Chaosium | Call of Cthulhu (Classic)
| |
| Scales, What Scales? | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Scalethorn Asylum | Support (F) | The Path to Y'ha-nthlei | CT24 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Scalpel | Support (F) | The Gleaming Spiral | CT44 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Scandal | Event (F) | The Gleaming Spiral | CT44 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Scanlon's Daughter | 223-241 | Down Darker Trails | CHA23151 | 2017 | Chaosium | Call of Cthulhu (Wild West)
| |
| The Scarecrow | 398-404 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now)
| |
| The Scarecrow | 7-14 | Opifex Bimonthly | 13 | May 1998 | Self Published | Call of Cthulhu (Now)
| |
| The Scarecrow | 1-7 | The Scarecrow | | 1991 | Self Published | Call of Cthulhu (Now)
| |
| The Scarecrow | | The Scarecrow | | May 2018 | Chaosium | Call of Cthulhu (Classic)
| |
| The Scarecrow | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Scarlet Fever | 8 | Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Scarlet Fever | 1992 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Scarlet Fever | 6 | The Unspeakable Oath | 5 | May 1992 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Scarlett Hayes | | Scarlett Hayes | | 2019 | CMON Limited | Cthulhu: Death May Die
| |
| Scary Monsters and Super Creeps | 18-22 | Different Worlds | 44 | Nov 1986 | Chaosium | Call of Cthulhu (Atomic)
, Call of Cthulhu (Now)
| |
| Scavenging | Event (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Scenario | 81-91 | Mysteries of the Raj | CHA0391 | 2010 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Scenario Hooks | 93-99 | Harlem Unbound | 1 | 2017 | Darker Hue Studios | Call of Cthulhu (Classic)
, Gumshoe
| |
| Scenario Seeds | 108-113 | Reign of Terror | CHA23149 | 2017 | Chaosium | Call of Cthulhu (Strange Aeons)
| |
| Scenario Spines | 79-88 | The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu
| |
| Scenario Suggestions | A:50-55 | Cthulhu by Gaslight | CHA2314-X | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| Scenario Suggestions | 64-70 | Cthulhu by Gaslight | CHA3303 | 1988 | Chaosium | Call of Cthulhu (Classic)
| |
 Scenario Upgrade Pack: In the Shadows | | Scenario Upgrade Pack: In the Shadows | cr1001 | 2015 | Cthulhu Reborn | Call of Cthulhu (Classic)
| |
| Scenario Upgrade Pack: The Stars Are Right! | | Scenario Upgrade Pack: The Stars Are Right! | cr1002 | 2017 | Cthulhu Reborn | Call of Cthulhu (Now)
| |
| Scene of the Crime | 42-43 | Dark Passions | WDF23200 | 2008 | WildFire Games | Framewerk (CthulhuTech)
| |
| A Scheme of Byakhees | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Schitzophrenia | Event (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Schizophrenia | Event (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Schizophrenia | Event (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Scholar from Yith | Character (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Scholarly Plagiarist | Character (F) | The Horror Beneath the Surface | CT20 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The School of Night | | Ken Writes About Stuff | v2n7 | Sep 2014 | Pelgrane Press | None
| |
| Schrodinger's Dilemma * | 2005 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Science and Technology | Jan 2001 | wtimmins.tripod.com | | n/a | Self Published | Call of Cthulhu (End Time)
| |
| Science Fiction Double Feature | 1-4 | Science Fiction Double Feature | | 2011 | Gratis Games | Call of Cthulhu (Now)
| |
| Scientific Text | Support (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Scientist from Yith | Character (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Scion of Vulcan | 67-96 | The Legacy of Arrius Lurco | MRP0009 | 2011 | Miskatonic River Press | Call of Cthulhu (Invictus)
| |
| Scions of the Forgotten | 14-47 | Ancient Enemies | WDF23100 | 2010 | WildFire Games | Framewerk (CthulhuTech)
| |
| Scooby Dee | Ally (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| Scooby Doo | Ally (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Scooby Doo and a Mummy Too | Adventure (F) | Scooby Doo Adventures | | n/a | Self Published | Mythos
| |
| Scooby Dooby Doo! | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Scooby Dum | Ally (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| Scooby Snacks | Artifact (F) | Scooby Doo Set 1 | | n/a | Self Published | Mythos
| |
| Scope of Magic | 8-12 | White Wolf | 29 | Oct 1992 | White Wolf Games | Call of Cthulhu (Classic)
| |
| Scotophobia | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Scotophobia | Event (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Scotophobia | Event (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Scouring the Earth | Event (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Scrabble | Artifact (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| The Scramble for Buranda | 83-102 | Unconventional Diplomacy | CB71208 | 2014 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Scream in the Dark: Vampires | 509-510 | Stardate | v3n6 | Jan 1987 | Reluctant Publishing | Call of Cthulhu (Classic)
| |
| The Scream of the Mandrake | | The Scream of the Mandrake | | Jun 2021 | Type40 | Call of Cthulhu (Classic)
| |
| The Screaming Horror of Creech Hill | 1-7 | The Screaming Horror of Creech Hill | | 2006 | Self Published | Call of Cthulhu (Now)
| |
| Screaming of the Spheres | Event (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Scribe Vampires of the Monkey Head Nebula (NGC 2174) | Feb-2021 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Scritch Scratch | 4-21 | Scritch Scratch | CHA23157 | 2018 | Chaosium | Call of Cthulhu (Now)
| |
| Scrolls of Dimension | Tome (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Sculptor of Time and Space | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Scurrying Rat-Thing | Character (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Scuttling | 90-107 | Sacraments of Evil | CHA2345 | 1993 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Scylla's Well | Support (F) | Into Tartarus | CT51 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sea Change | Event (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sea Circle | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Sea Devil | Character (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sea Food | 405-442 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now)
| |
| Sea Food | 5-37 | Opifex Bimonthly | 3 | 1996 | Self Published | Call of Cthulhu (Now)
| |
| Sea Food | 1-38 | Sea Food | | 1996 | Self Published | Call of Cthulhu (Now)
| |
| Sea Mythos and Monsters | Tome (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| The Sea of Dreams | 6-7 | The Whisperer | 4 | Spr 2001 | Severn Valley Press | Call of Cthulhu (Dreamlands)
| |
| A Sea of Sand and Stone | 11-23 | Guide to North Africa | MUH01052CS | 2014 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Sea Travel | 43 | Green and Pleasant Land | CHA2320 | 1987 | Chaosium | Call of Cthulhu (Classic)
| |
| Sea Worms | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Seal of Isis | Artifact (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Seal of Isis | Event (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Seal the Soul | Event (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Seals of Cthulhu | | The Seals of Cthulhu | | 2020 | Thing 12 Games | The Seals of Cthulhu
| |
| Seams of Peril | | Seams of Peril | cr3005g | 2017 | Cthulhu Reborn | Call of Cthulhu (Convicts)
| |
| The Séance | 2001 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Seaplane | Event (R) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Search and Seizure | Event (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Search for Atlantis | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Search for Kadath | | The Search for Kadath | AHC39 | 2019 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Search For the Lost City | 40-41 | Games Master International | 13 | Aug 1991 | Newsfield | Shadowrun
| |
| Search For the Lost City | 40-41 | Games Master International | 14 | Sep 1991 | Newsfield | Shadowrun
| |
| Search Warrant | Event (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Search/What Now? | 4:24 | Horror on the Orient Express Music | AOCD7004 | 2005 | A O Music | Call of Cthulhu (Classic)
| |
| Searching for Cthulhu in Nightmare House | 35 | Space Gamer | 71 | Nov 1984 | Steve Jackson Games | Call of Cthulhu (Classic)
, Nightmare House
| |
| Searching For Laban Shrewsbury | Adventure (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Searching the Reserves | Event (F) | Murmurs of Evil | CT35 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Season 2 Expansion | | Season 2 Expansion | DMD002 | 2019 | CMON Limited | Cthulhu: Death May Die
| |
| Season of the Witch | B:38-49 | H.P. Lovecraft's Dreamlands | CHA2315-X | 1986 | Chaosium | Call of Cthulhu (Dreamlands)
| |
| Season of the Witch | 192-203 | H.P. Lovecraft's Dreamlands | CHA2394 | 2004 | Chaosium | Call of Cthulhu (Dreamlands)
| |
| Season of the Witch | 77-87 | H.P. Lovecraft's Dreamlands | CHA3302 | 1988 | Chaosium | Call of Cthulhu (Dreamlands)
| |
| Season of the Witch | | Season of the Witch | MAD02 | 2011 | Fantasy Flight Games | Mansions of Madness
| |
| Season's Greetings | 31-38 |  Serendipity's Circle | 6 | Win 1995 | Self Published | Bureau 13
, Call of Cthulhu (Now)
| |
| Seattle Drivers | 222-223 | CthulhuTech | WDF23000 | 2007 | WildFire Games | Framewerk (CthulhuTech)
| |
| Sebastion Blake | Character (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sebek's Chosen One | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Second Chancers | Character (F) | The Breathing Jungle | CT49 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Second Circle | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Second Circle | 16-17 | Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Second Circle | 1990 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Second Dragon | Story (F) | The Shifting Sands | CT47 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Second Edition Suggestions | | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Second Era | 78-79 | Once Men | CHA0356 | 2008 | Chaosium | Call of Cthulhu (Once Men)
| |
| Second Psychiatric Hospital | Location (U) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| The Second Saga | 35-51 | The Ravenar Sagas | CHA0348 | 2008 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| A Second Theseus | 97-128 | The Legacy of Arrius Lurco | MRP0009 | 2011 | Miskatonic River Press | Call of Cthulhu (Invictus)
| |
| The Second Wave | | Chaosium Digest | v22n06 | Oct 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| The Second Wave | 1997 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Secondary Infection | 27-47 | The Unspeakable Oath | 25 | Jul 2018 | Pagan Publishing | Delta Green
| |
| Secret Agendas | 79-100 | Black Bag Jobs | CB71202 | 2011 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Secret and Occult Societies | 60-110 | Keeper's Guide to the Secret War | MPS01032CS | 2013 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Secret Cthulhu | | Secret Cthulhu | | 2019 | Self Published | Secret Cthulhu
| |
| Secret Cults | 102-120 | The Keeper's Companion Vol 1 | CHA2388 | 2000 | Chaosium | Call of Cthulhu (Classic)
| |
| Secret Cults | 35-52 | Keeper's Compendium | CHA2344 | 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| The Secret Doctrine | 24-27 | Polaris | 1 | Sum 1987 | Self Published | Call of Cthulhu (Classic)
| |
| Secret File | Support (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Secret Genealogies | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Secret Handshake | Event (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Secret Histories | 39-138 | Cthulhu Live: Lost Souls | 0005 | 2000 | Fantasy Flight Games | Call of Cthulhu (Classic)
| |
| Secret Motivations in Call of Cthulhu, Or, Why Curiosity Killed the Cat | | Chaosium Digest | v27n08 | Feb 1999 | Chaosium | Call of Cthulhu (Classic)
| |
| Secret Murders | Support (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Secret Name | | The Secret Name | AHC30 | 2019 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| The Secret of Black Rock | | Mists of the Aeons | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Secret of Castronegro | 166-179 | Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| The Secret of Castronegro | 128-141 | Cthulhu Classics | CHA3301 | 1989 | Chaosium | Call of Cthulhu (Classic)
| |
| The Secret of Castronegro | 46-59 | Cthulhu Companion | CHA2304 | 1983 | Chaosium | Call of Cthulhu (Classic)
| |
| The Secret of Knossos | 6-29 | Worlds of Cthulhu | 1 | Aug 2004 | Pegasus Press | Call of Cthulhu (Classic)
| |
| The Secret of Marseilles | 31-57 | King of Chicago | CHA2348 | 1994 | Chaosium | Call of Cthulhu (Classic)
| |
| The Secret of Power and Glory is Yours! | Adventure (U) | Expeditions of Miskatonic University | CAO1301-1 | 1996 | Chaosium | Mythos
| |
| The Secret of Rolthin Abbey | 23-53 | Strange Tales of Dread & Wonder #1 | CHA0329 | 2006 | Chaosium | Call of Cthulhu (Classic)
| |
| The Secret of Silcestre | | The Secret of Silcestre | | May 2021 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| The Secret of the North Woods | Story (F) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Secret of the North Woods | Story (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Secret of the North Woods | Story (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Secret Research | Support (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Secret Service Agent | Character (F) | Aspirations of Ascension | CT43 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Secret Shopper * | 2013 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Secret Shopper * | 36-38 | The Unspeakable Oath | 24 | Jul 2014 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Secret Societies | 42-43 | Mysteries of Ireland | CHA0408 | 2012 | Chaosium | Call of Cthulhu (Classic)
| |
| Secret Societies | 54-58 | Mysteries of Morocco | CHA0306 | 2004 | Chaosium | Call of Cthulhu (Classic)
| |
| Secret Societies | 108-120 | Secrets of Kenya | CHA23109 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Secret Societies for CoC | | Chaosium Digest | v12n10 | Jan 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Secret Stiletto | Support (F) | The Antediluvian Dreams | CT21 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Secret War | | The Secret War | | 2016 | Modiphius Entertainment | The Secret War
| |
| Secretive Zoog | Character (F) | In Memory of Day | CT27 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Secrets | 186-197 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars)
| |
| Secrets and Lies | 24-29 | Guide to North Africa | MUH01052CS | 2014 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Secrets and Spies | 46-57 | Zero Point, Part 3 - Code of Honour | MUH051257 | 2017 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| The Secrets of Arkham | Story (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Secrets of Bubastis | Event (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Secrets of Dunwich | 37-63 | H.P. Lovecraft's Dunwich | CHA8802 | 2002 | Chaosium | Call of Cthulhu (Classic)
| |
| Secrets of Dunwich | 22-27 | Return to Dunwich | CHA2330 | 1991 | Chaosium | Call of Cthulhu (Classic)
| |
| Secrets of the Kremlin | 38-61 | Glozel Est Authentique! | T-5 | 1984 | Theatre of the Mind Enterprises | Call of Cthulhu (Classic)
| |
| Secrets of the Kurlies | 85-97 | Walker in the Wastes | PAG1002 | 1994 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Secrets of the Lost Tomb | | Secrets of the Lost Tomb | | 2015 | Everything Epic Games | Secrets of the Lost Tomb
| |
| Secrets of the Order | | Secrets of the Order | | 2021 | Fantasy Flight Games | Arkham Horror
| |
| Secrets of the Silver Twilight | Adventure (U) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| The Secrets of the Watchers | | Valkyrie | 14 | 1996 | Partizan Press | Call of Cthulhu (Classic)
| |
| Secrets Out of Time | 78-95 | Virtual Lore | 2 | 1993 | The Cabil | Call of Cthulhu (Classic)
| |
| Secrets, Mysteries, Legends, and Rumors | 123-125 | Return to Dunwich | CHA2330 | 1991 | Chaosium | Call of Cthulhu (Classic)
| |
| Security Best Practice Guide | 149-156 | The Laundry | CB71200 | 2010 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Sedanette | Support (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sedanette | Support (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sedated | Support (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sedated | Support (C) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Seduction of the Tombs | Event (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| See No Evil | 113-127 | The Unspeakable Oath | 16/17 | Mar 2001 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Seeds | Support (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Seeds of Corruption | 3-10 | Punktown | | 2018 | Miskatonic River Press | Call of Cthulhu (Cyberpunk)
| |
| Seeing the Light | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Seeker of Mysteries | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Seeker of Mysteries | Character (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Seeker of the Profane | Character (F) | Conspiracies of Chaos | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Seeker of the Profane | Character (F) | Conspiracies of Chaos | CT14e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Seeker of the Songlines | Character (F) | Shadow of the Monolith | CT52 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Seeking Eternity in Innsmouth | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Seeking Everlasting Life I | Adventure (U) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Seeking Everlasting Life II | Adventure (U) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| The Seer | Oct 2015 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Seer of the Gate | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sefton Asylum | Location (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Seizing the Tablets | 181-192 | Walker in the Wastes | PAG1002 | 1994 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Seizure | | Chaosium Digest | v35n07 | Jan 2002 | Chaosium | Call of Cthulhu (Atomic)
| |
| Selections from the Livre d'Ivon | 156-158 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Selections from the Livre d'Ivon | 141-143 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| SELF PRESERVATION | 2016 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Self-Actualizing Man * | 101 | Taint of Madness | CHA2354 | 1995 | Chaosium | Call of Cthulhu (Classic)
| |
| Self-Guiding Bullets? | 77-81 | Protodimension | 13 | Aut 2012 | Kinstaff Media | Call of Cthulhu (Now)
| |
| Self-Slaughter | Event (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Senator Nathaniel Rhodes | Character (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Send in the Clones Deck | | Thastygliax's Vault | | n/a | Self Published | Mythos
| |
| Send in the Marines! | 502-521 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Send in the Marines! | 388-406 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Senior Associate | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Senior Project | 98-136 | Ramblings of a Twisted Muse | CHA0314 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| A Sense About Things | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
 Sense No. 6 | | Dagon | 12 | Apr 1986 | Self Published | Call of Cthulhu (Classic)
| |
| The Sense of the Sleight-of-Hand Man | 5-37 | Worlds of Cthulhu | 6 | Jan 2009 | Pegasus Press | Call of Cthulhu (Dreamlands)
| |
| Sent Through Time and Hell | Adventure (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Sentence Served | Nov 2009 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sentinel Hill | Support (F) | Dunwich Denizens | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sentinel Hill | Support (F) | Dunwich Denizens | CT15e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sentinel Hill | Location (U) | Expeditions of Miskatonic University | CAO1301-1 | 1996 | Chaosium | Mythos
| |
| Separation Anxiety | 7-12 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now)
| |
| Seplophobia | Event (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Sepulchral Shoggoth | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sepulchral Shoggoths | | Sepulchral Shoggoths | | Aug 2021 | Last Mile Game Logistics | Call of Cthulhu (Classic)
| |
| Sequence | 2018 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Sequence of Play | 56-93 | Skirmish: Commander's Set | MUH050454 | 2016 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Serendipity | 268 | Eldritch Skies | BPI7500 | 2012 | Battlefield Press | Unisystem (Eldritch Skies)
| |
| Serendipity | 6-7 | Minions | CHA2365 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Serene and Primal | 1-24 | Serene and Primal | | 1999 | Self Published | Call of Cthulhu (Classic)
| |
| Sergeant Donnelly | Character (F) | Words of Power | CT54 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Serial Killer | Event (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Sermon Grant, antiquarian, occultist and gentleman adventurer | 4-6 | The Black Seal | 1 | Nov 2001 | Brichester University Press | Call of Cthulhu (Delta Green)
, Call of Cthulhu (Now)
| |
| Sermon of Sludge | | Sermon of Sludge | | Aug 2021 | Chaosium | Call of Cthulhu (Strange Aeons: 1973)
| |
| Serpent Folk | | Ken Writes About Stuff | v2n4 | Jun 2014 | Pelgrane Press | Trail of Cthulhu
| |
| Serpent from Yoth | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Serpent from Yoth | Character (C) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Serpent People | | Chaosium Digest | v19n10 | Jun 1997 | Chaosium | Mythos
| |
| Serpent People | Monster (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Serpent People | Monster (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| The Serpent People (and Their Penguins) Have Invaded New York!!! | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| Serpent People and their Penguins | | Chaosium Digest | v21n07 | Sep 1997 | Chaosium | Mythos
| |
| The Serpent People are Everywhere!! | | Chaosium Digest | v20n11 | Aug 1997 | Chaosium | Mythos
| |
| The Serpent People Are Everywhere!!! | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| Serpent People with Guns! Mythos Deck | | Chaosium Digest | v20n06 | Jul 1997 | Chaosium | Mythos
| |
| Serranian | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Servant from Out of Time | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Servant from Out of Time | Character (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Servant of Glaaki | Character (F) | Aspirations of Ascension | CT43 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Servant of Glaaki | Monster (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Servant of God | 91-110 | Tales of the Caribbean | GGP1603 | 2016 | Golden Goblin Press | Call of Cthulhu (Classic)
| |
| Servant of Nodens | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Servant of Nodens | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Servant of Nodens | Character (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Servant of the Key | Character (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Servant of the Night | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Servant of the Oath | Character (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Servant to the Elder Things | Character (F) | Lost Rites | CT56 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Servants of the Lake | 56-75 | Doors to Darkness | CHA23148 | 2015 | Chaosium | Call of Cthulhu (Classic)
| |
| Servants of the Silver Twilight | Monster (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Servants of Zen Tuo | Monster (F) | Scooby Doo Set 1 | | n/a | Self Published | Mythos
| |
| Served Cold | 144-167 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu
| |
| Service Notice | Support (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Servitor of the Outer Gods | Monster (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Servitors of the Spider-God, Atlach-Nacha | Nov 2002 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Set a Trap | Event (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Seth Bishop Ruins | Location (R) | Expeditions of Miskatonic University | CAO1301-1 | 1996 | Chaosium | Mythos
| |
| Setting | 18-33 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars)
| |
| Setting Creation | 322-371 | Raiders of R'lyeh Gamemaster's Guide and Complete Rules | | 2017 | Self Published | Raiders of R'lyeh
| |
| Setting Cthulhu in the Wild West | | Chaosium Digest | v02n03 | Apr 1993 | Chaosium | Call of Cthulhu (Wild West)
| |
| The Setting Sun | Support (F) | Twilight Horror | CT26 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Setting the Stage | 121-133 | Cthulhu Live | 0004 | 1999 | Fantasy Flight Games | Call of Cthulhu (Classic)
| |
| Setting the Stage | 95-105 | Cthulhu Live | CHA6502 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Setting the Standard: Corrupt Power | | Chaosium Digest | v27n01 | Dec 1998 | Chaosium | Mythos
| |
| Settling in Triumph | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Seven Cryptical Books of Hsaan | Support (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Seven Cryptical Books of Hsan | 556-562 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| The Seven Cryptical Books of Hsan | 429-435 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Seven Cryptical Books of H'san (Chinese) | Tome (R) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Seven Cryptical Books of H'san (English) | Tome (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Seven Cryptical Books of Hsan, Lost Masterpiece | Support (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Seven Grinches Grinching | Dec 2001 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Now)
| |
| The Seven Hundred Steps | Support (F) | In Memory of Day | CT27 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Seven is Darker | | Delta Green Anomalies | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Seven Sister Hills | | Seven Sister Hills | | Jul 2021 | Chaosium | Call of Cthulhu (Now)
| |
| Seven Woodcut Blocks | 2006 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Seventh Circle | 3-52 | The Seventh Circle | PELG014 | 2014 | Pelgrane Press | Fear Itself
, Trail of Cthulhu
| |
| The Seventh Gate | Story (F) | The Shifting Sands | CT47 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Seventh Gateway of the Mirage | | Unknown | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Seventh Gateway of the Mirage | 16 | The Unspeakable Oath | 12 | Jun 1995 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Seventh House On The Left | Support (F) | Kingsport Dreams | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Seventh House On The Left | Support (F) | Kingsport Dreams | CT13e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Seventh House On The Left | Location (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| The Seventh Turn | 15-36 | The Legacy of Arrius Lurco | MRP0009 | 2011 | Miskatonic River Press | Call of Cthulhu (Invictus)
| |
| The Seventy Steps | Support (F) | In Memory of Day | CT27 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Severn Bank Giant | 35-? | Demonground | 11 | Mar 2001 | Self Published | Call of Cthulhu (Now)
| |
| The Severn Valley | | Valkyrie | 16 | 1998 | Partizan Press | Call of Cthulhu (Now)
| |
| Sex Worker | 112-113 | Ancient Enemies | WDF23100 | 2010 | WildFire Games | Framewerk (CthulhuTech)
| |
| Sgt Logan Terry | Character (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shaawanoki | Oct 2015 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shades of Golgotha | | Ruins of Golgotha | | 2006 | ADP Systems | Call of Cthulhu (Classic)
| |
| Shades of Gray | 130-131 | Vade Mecum | WDF23001 | 2008 | WildFire Games | Framewerk (CthulhuTech)
| |
| Shades of Tomorrow Lost | 6-29 | More Adventures in Arkham Country | MRP0007 | 2010 | Miskatonic River Press | Call of Cthulhu (Classic)
| |
| Shadow | Monster (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Shadow Company | Character (F) | The Thing from the Shore | CT23 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadow Eater | Character (F) | Aspirations of Ascension | CT43 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Shadow From the Past | Adventure (F) | Eric Johnson Mythos Collection | | n/a | Self Published | Mythos
| |
| Shadow Hunters | | Shadow Hunters | | 2017 | Devil Pig Games | Shadows Over Normandie
| |
| The Shadow in the Tree | | Cthulhu Hardboiled Campaign | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Shadow in the Tree | | The Shadow in the Tree | | 2003 | Self Published | Call of Cthulhu (Classic)
| |
| Shadow Kingdoms | | Shadow Kingdoms | | 2006 | Self Published | Call of Cthulhu (Dark Ages)
| |
| The Shadow of a Dark God | | The Shadow of a Dark God | | 2001 | Warp Spawn Games | The Shadow of a Dark God
| |
| The Shadow of Mahogany Row | 62-70 | As Above, So Below | CB71209 | 2015 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Shadow of Miskatonic | | Shadow of Miskatonic | | 2020 | Self Published | Shadow of Miskatonic
| |
| Shadow of the Elder Gods | | Shadow of the Elder Gods | LGL300 | 2015 | Laboratory Games | Shadow of the Elder Gods
| |
| The Shadow of the Fleshless Ones | 8-10 | Protodimension | 21 | Aut 2014 | Kinstaff Media | Conspiracy Rules
, Dark Conspiracy
| |
| The Shadow on the Sea | M1-M8 | Different Worlds | 47 | Aut 1987 | Chaosium | Call of Cthulhu (Classic)
| |
| Shadow on the Sea | | Shadow on the Sea | | Nov 2020 | Chaosium | Call of Cthulhu (Classic)
| |
| The Shadow out of Time | Story (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadow over Cairo | Event (P) | Eldritch Edition Promo | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadow Over Cancun | 281-282 | CthulhuTech | WDF23000 | 2007 | WildFire Games | Framewerk (CthulhuTech)
| |
| The Shadow Over Darkbank | 65-74 | Green and Pleasant Land | CHA2320 | 1987 | Chaosium | Call of Cthulhu (Classic)
| |
| The Shadow Over Holywood | 160-168 | Secrets of Los Angeles | CHA23111 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Shadow Over Innsmouth | 15-23 | Escape from Innsmouth | CHA2338 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Shadow Over Innsmouth | 15-20 | Escape from Innsmouth | CHA2371 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| The Shadow Over Kafiristan | 43-58 | Black Bag Jobs | CB71202 | 2011 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| The Shadow Over Providence | | The Shadow Over Providence | CHA23163 | 2019 | Chaosium | Call of Cthulhu (Classic)
| |
| The Shadow Over Sidmouth | 19-22 | Dagon | 14 | Sep 1986 | Self Published | Call of Cthulhu (Classic)
| |
| Shadow Over Stockton | 12-19 | Vortext | 1 | Spr 1991 | Vortex Publishing | Call of Cthulhu (Now)
| |
| The Shadow Over Washington | 4-36 | The Shadow Over Washington | PELGOC07D | 2018 | Pelgrane Press | Gumshoe (Cthulhu Confidential)
| |
| The Shadow People | Oct 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shadow Shades | Oct 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shadow Sorceress | Character (F) | The Terror of the Tides | CT22 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadow Team | Character (F) | Spawn of Madness | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadow Team | Character (F) | Spawn of Madness | CT12e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadow War | Conspiracy (F) | Touched by the Abyss | CT58 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadowbox | Oct 2015 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shadowed Reef | Support (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadowed Reef | Support (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadowed Woods | Support (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadowed Woods | Support (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadowfist | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Shadows and Reflections | Support (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadows by the Fireside | 14-17 | Book of Dark Wisdom | 2 | Win 2003 | Elder Sign Press | Call of Cthulhu (Classic)
| |
| Shadows Fall | Support (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadows Melt Away | Support (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Shadows of Frog's Yoghurt | 4-8 | The Black Sun | 7 | 1985 | Games Workshop | Call of Cthulhu (Classic)
| |
| Shadows of Leningrad | 2-35 | Age of Cthulhu Vol. III: Shadows of Leningrad | 7003 | 2010 | Goodman Games | Call of Cthulhu (Classic)
| |
| Shadows of Nephren-Ka | Story (F) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadows of Nephren-Ka | Story (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadows of Polynesia | 5-8 | The Arkham Gazette | 2 | Nov 2013 | Sentinel Hill Press | Call of Cthulhu (Classic)
| |
| Shadows of Tomorrow | 62-99 | Interface 19.40 | MUH050027AC | 2015 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Interface Zero
, Savage Worlds (Achtung!)
| |
| Shadows of War Past | 86-101 | Halloween Horror Returns! | CHA0347 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Shadows of Yesterday, Part 1 | | Chaosium Digest | v27n02 | Dec 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Shadows of Yesterday, Part 2 | | Chaosium Digest | v27n03 | Dec 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Shadows of Yesterday, Part 3 | | Chaosium Digest | v27n04 | Dec 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Shadows Over Holywood | B:91-92 | Call of Cthulhu | CHA2009-X | 1981 | Chaosium | Call of Cthulhu (Classic)
| |
| Shadows Over Normandie | | Shadows Over Normandie | 58303 | 2015 | Devil Pig Games | Shadows Over Normandie
| |
| Shadow-spawned Hunting Horror | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadow-spawned Hunting Horror | Character (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shadowy Figure | Character (F) | Words of Power | CT54 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shadrack and Pettifogg: Solicitors and Estate Agents | 28-29 | The Whisperer | 1 | Sum 1999 | Severn Valley Press | Call of Cthulhu (Classic)
| |
| Shadyvill | | Shadyvill | | 2006 | Self Published | Call of Cthulhu (Now)
| |
| Shag the World! | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Shaggai Map | | Shaggai Map | CW-M11 | 2019 | Petersen Games | Cthulhu Wars
| |
| Shaggai Mental Possession | Spell (U) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Shake the Disease | 144-146 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| Shakedown! | Event (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shall Humanity Survive? | 201 | Ramblings of a Twisted Muse | CHA0314 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| Shallow Roadside Grave | 40 | The Unspeakable Oath | 16/17 | Mar 2001 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Shamanism | 42-52 | Mythos Magic | CHA0341 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Shambler from the Stars | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Shambling Zombie | Character (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shambling Zombie | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shambling Zombie | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shamus | Character (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shanghai | 171-207 | The Complete Masks of Nyarlathotep | CHA2361 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Shanghai | E:1-31 | Masks of Nyarlathotep | CHA2307-X | 1984 | Chaosium | Call of Cthulhu (Classic)
| |
| Shanghai | 189-230 | Masks of Nyarlathotep | CHA23118 | 2010 | Chaosium | Call of Cthulhu (Classic)
| |
| Shanghai | 107-137 | Masks of Nyarlathotep | CHA3304 | 1989 | Chaosium | Call of Cthulhu (Classic)
| |
| Shanghai Bullets | 22-41 | Stunning Eldritch Tales | PELGT02 | 2008 | Pelgrane Press | Trail of Cthulhu
| |
| Shannon's Photo | 2006 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shantak Mount | Character (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shantaks | Monster (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Shantaks | Monster (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Sharer of Pain | Oct 2015 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shariil Sophast | Ally (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Sharing Nightmares | 7-13 | Doors to Darkness | CHA23148 | 2015 | Chaosium | Call of Cthulhu (Classic)
| |
| Sharpshooter | Character (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shattered Aeons | | Shattered Aeons | AHC25 | 2018 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Shattered Earth, Poison Sky | 63-84 | Shadows Over Stillwater | CHA23156 | 2019 | Chaosium | Call of Cthulhu (Wild West)
| |
| The Shattered Hole | 59-61 | Protodimension | 22 | Win 2015 | Kinstaff Media | Call of Cthulhu (Classic)
| |
| She Just Couldn't Stay Away (No, No) | 8-19 | The Unspeakable Oath | 20 | Jun 2011 | Pagan Publishing | Call of Cthulhu (Now)
| |
| She Walks by Night | | Serendipity's Circle | 13 | Win 1997 | Self Published | Call of Cthulhu (Classic)
| |
| Sheela-na-gig | 126-153 | The Golden Dawn | PAG1004 | 1996 | Pagan Publishing | Call of Cthulhu (Gaslight)
| |
| Sheer Force of Will | Event (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sheer Force of Will | Event (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shell-shocked: A WWII Tale of Terror | | Chaosium Digest | v26n12 | Dec 1998 | Chaosium | Call of Cthulhu (WWII)
| |
| Shenandoah | 1-42 | Shenandoah | CHA0377 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| The Shepherds | Character (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Shifting Sands of War | 30-42 | Guide to North Africa | MUH01052CS | 2014 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Shifting Spells | 22-23 | The Unspeakable Oath | 12 | Jun 1995 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Shimmering Seas | | Shimmering Seas | | Jun 2019 | Chaosium | Call of Cthulhu (Now)
| |
| Shining Trapezohedron | Artifact (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Shining Trapezohedron Marker Pack | | Shining Trapezohedron Marker Pack | CW-E15 | 2017 | Petersen Games | Cthulhu Wars
| |
| Shining Trapezohedron, The Darkest Jewel | Support (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ship of Clouds | Event (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Ship Outta Luck | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Ship That Waits | 120-150 | Once Men | CHA0356 | 2008 | Chaosium | Call of Cthulhu (Once Men)
| |
| Ships of the Desert | 54-70 | Guide to North Africa | MUH01052CS | 2014 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Shipwreck | Event (R) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Shiver | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Shock and Awe | 2017 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| A Shock in the Lightest Night | 114-123 | Beyond the Mountains of Madness | CHA2380 | 1999 | Chaosium | Call of Cthulhu (Classic)
| |
| Shocking Transformation | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shocking Transformation | Event (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shoggites | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shoggoth | Monster (F) | Antarctica | | n/a | Self Published | Mythos
| |
| Shoggoth | | Ken Writes About Stuff | v1n9 | Dec 2013 | Pelgrane Press | Trail of Cthulhu
| |
| Shoggoth | Monster (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Shoggoth Local #1 | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shoggoth Lord | Monster (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Shoggoth o' War | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shoggoth Seeds | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Shoggoth Slave | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shoggoth Unbound | Character (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shoggoths Don't Kill People, Guns Do | 28-29 | Dagon | 11 | Jan 1986 | Self Published | Call of Cthulhu (Classic)
| |
| Shoggoth-Twsha | Character (C) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shopping and Equipment | 75-78 | World War Cthulhu: London | CB71941 | 2016 | Cubicle 7 | Call of Cthulhu (WWII)
| |
| Shopping in London | A:70-80 | Cthulhu Britannica: London Box Set | CB7354 | 2014 | Cubicle 7 | Call of Cthulhu (Classic)
| |
| The Shore Road Mystery | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Shores of Death | 77-123 | Assault on the Mountains of Madness | MUH050029 | 2013 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Short Answers to Simple Questions | | House of Tindalos | | n/a | Self Published | Mythos
| |
| A Short Bestiary of Feline Foes | 33-36 | Cathulhu | 60-KAT01 | 2014 | Sixtystone Press | Call of Cthulhu (Catthulhu)
| |
| Short Fuse | Event (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Short Fuse | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Short Idea for a Dreamlands Game | | Chaosium Digest | v09n08 | Feb 1995 | Chaosium | Arkham Horror
| |
| Short Story | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Short Story | 16 | Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Short Story | 1990 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| A Short Tour Around Mare Nostrum | 20-60 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| Shortsighted Librarian | Character (F) | The Terror of the Tides | CT22 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shoshana Hatch | Character (F) | Ebla Restored | CT55 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shotgun | Support (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shotgun | Artifact (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Shotgun | Support (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shotgun Blast | Event (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shotgun Blast | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shotgun Blast | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shotgun Blast | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shotgun Blast | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shotgun Blast | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shotguns | 76-85 | Investigator Weapons Volume 1: The 1920s and 1930s | 60-IHB01 | 2012 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Shotguns | 134-147 | Investigator Weapons Volume 2: Modern Day | 60-IHB02 | 2015 | Sixtystone Press | Call of Cthulhu (Now)
| |
| Shouyokai | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Show of Loyalty | Event (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Shragged Man | 11-12 | The Black Seal | 3 | Nov 2003 | Brichester University Press | Call of Cthulhu (Now)
| |
| The Shriek of Cities | Support (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shrieking Byakhee | Character (F) | Conspiracies of Chaos | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shrieking Byakhee | Character (F) | Conspiracies of Chaos | CT14e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Shrieking Violet | | A Shrieking Violet | | Aug 2021 | Chaosium | Call of Cthulhu (Classic)
| |
| Shrine of the Moirai | | Arkham Nights 2019 Promo Cards | | 2019 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Shrine to Yig | Support (F) | Murmurs of Evil | CT35 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shrivelling | Spell (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Shriven and Resolute | Support (F) | The Breathing Jungle | CT49 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shub-Niggurath | Character (F) | The Cacophony | CT39 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shub-Niggurath | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shub-Niggurath | Monster (U) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Shub-Niggurath | Character (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shub-Niggurath Promo Card | | Shub-Niggurath Promo Card | | 2012 | Fantasy Flight Games | Elder Sign
| |
| Shub-Niggurath, She with a Thousand Young | Character (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shub-Niggurath, The All-Mother | Character (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shub-Niggurath, The Black Goat of the Woods | Character (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Shudde M'ell | Character (F) | The Gleaming Spiral | CT44 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shuggob, Ghoul Sage | Character (F) | Sleep of the Dead | CT30 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Shuggoth Shuffle Promo Card | | Shuggoth Shuffle Promo Card | | Apr 2008 | Steve Jackson Games | Munchkin
| |
| Shugoron, Beloved of the Tcho-Tcho | Character (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Shunned House | Adventure (F) | Eric Johnson Mythos Collection | | n/a | Self Published | Mythos
| |
| The Shunned House | Location (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Shuttle Icarus | Event (U) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Sibilant Cry | Event (F) | Written and Bound | CT53 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sick Building Syndrome | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Siege on Saxemberg | 19-32 | Assault on the Mountains of Madness | MUH050029 | 2013 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Sieur Piriou Louis | Character (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Sight for Sore Eyes | Event (F) | Screams from Within | CT38 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sight Unseen | | Sight Unseen | SKP0833 | 2008 | Skirmisher Publishing | Call of Cthulhu (Classic)
| |
| The Sights of the City | 21-57 | The Cairo Guidebook | CHA2351 | 1995 | Chaosium | Call of Cthulhu (Classic)
| |
| Sigil of Doom | Support (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sigil of the Order | Support (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sign of Barzai | Spell (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Sign of Dynamite | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Sign of Eibon | Spell (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Sign of Kish | Spell (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Sign of the Red Boar Inn | 7-13 | Colonial Terrors | CHA0405 | 2011 | Chaosium | Call of Cthulhu (Strange Aeons: 1760s)
| |
| The Signal | 101-120 | Black Bag Jobs | CB71202 | 2011 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| The Signal Smugglers | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Signing the Book | Event (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Signs of Carcosa | | Signs of Carcosa | EH06 | 2016 | Fantasy Flight Games | Eldritch Horror
| |
| Signs Writ in Scarlet | 108-137 | Sacraments of Evil | CHA2345 | 1993 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Silas Marsh Promo Cards | | The Deep Gate | NAH13 | 2018 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| The Silence Mill | 44-78 | Out of the Woods | PELGT43 | 2017 | Pelgrane Press | Trail of Cthulhu
| |
| The Silence of Thousands Shall Quell the Refrain | 20-35 | Red Eye of Azathoth | REAz | 2011 | Kobold Quarterly | Call of Cthulhu (Strange Aeons: 1287AD)
| |
| A Silence of Three Parts | 2018 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| A Silent Dawn in the Desert | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Silent Mover | Character (F) | Never Night | CT50 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Silent Night | 3-18 | Christmas in Kingsport | CHA0334 | 2006 | Chaosium | Call of Cthulhu (Now)
| |
| Silent Scream | 90-104 | Goatswood and Less Pleasant Places | CHA2393 | 2001 | Chaosium | Call of Cthulhu (Now)
| |
| The Silent Service | 2014 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Silk Road | 321-333 | Secrets of Japan | CHA2392 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| The Silks of Irem | 31-35 | The Island of Ignorance | GGP1301 | 2013 | Golden Goblin Press | Call of Cthulhu (Classic)
| |
| Silva Nigra | 27-43 | Extrico Tabula | CHA0354 | 2008 | Chaosium | Call of Cthulhu (Invictus)
| |
| The Silver Key | Artifact (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Silver Key | Support (F) | Search for the Silver Key | CT29 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Silver Lance | Support (F) | Perilous Trials | CT41 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Silver Tablet | | The Silver Tablet | MAD03 | 2011 | Fantasy Flight Games | Mansions of Madness
| |
| Silver Twilight Collector | Character (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Silver Twilight Emissary | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Silver Twilight Enforcer | Character (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Silver Twilight Indoctrination | Event (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Silver Twilight Lodge | Support (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Silver Twilight Lodge | Location (U) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Silver Twilight Lodge | Support (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Silver Twilight Temptress | Character (F) | The Horror Beneath the Surface | CT20 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Silver Twilight Turncoat | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Silver Twilight Turncoat | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Silvio Fragments | 5-6 | Book of Dark Wisdom | 1 | Sum 2003 | Elder Sign Press | Call of Cthulhu (Classic)
| |
| Simon Orne | Ally (R) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Simple Kindness | Event (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Simplon-Orient Express Operations | A:19-32 | Horror on the Orient Express | CHA23130 | 2014 | Chaosium | Call of Cthulhu (Classic)
| |
| Simplon-Orient Express Operations | A:4-14 | Horror on the Orient Express | CHA2331-X | 1991 | Chaosium | Call of Cthulhu (Classic)
| |
| Simply Red | 112-121 | Blood Brothers 2 | CHA2340 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Simpson's Halloween | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Simulacrum Unbound | D:127-168 | Horror on the Orient Express | CHA23130 | 2014 | Chaosium | Call of Cthulhu (Now)
| |
| Sin Nombre | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Sine Qua Nona | | Serendipity's Circle | 16 | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sinful Season | 1-19 | Sinful Season | | 2014 | Self Published | Call of Cthulhu (Delta Green)
| |
| The Singer from Dhol | 35-62 | Worlds of Cthulhu | 2 | Feb 2005 | Pegasus Press | Call of Cthulhu (Classic)
| |
| The Singing Flesh-Beasts of St Simon | 57-66 | The Pastores | CHA0313 | 2005 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| A Single Glimpse | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Single Glimpse | Event (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| A Single Glimpse | Event (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Single Origin | 2018 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| A Single Path | Event (F) | The Horror Beneath the Surface | CT20 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sinister Clerk | Character (F) | Perilous Trials | CT41 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sinister Seeds | 124-126 | Cthulhu Casebook | CHA3305 | 1990 | Chaosium | Call of Cthulhu (Classic)
| |
| Sinister Seeds | 153-157 | Escape from Innsmouth | CHA2338 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Sinister Seeds | 159-164 | Escape from Innsmouth | CHA2371 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Sink Hole | 443-458 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now)
| |
| Sink Hole | 1-16 | Sink Hole | | 1999 | Self Published | Call of Cthulhu (Now)
| |
| SinkHole | 7-22 | Opifex Bimonthly | 23 | Jan 2000 | Self Published | Call of Cthulhu (Now)
| |
| Sinkhole! | Event (F) | That Which Consumes | CT45 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sinking the Lotus | Event (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Sinne Eater | Feb 2009 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sins of My Youth | 18-22 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now)
| |
| Sins of the Daughter | 48-53 | Dark Passions | WDF23200 | 2008 | WildFire Games | Framewerk (CthulhuTech)
| |
| The Sintered Man Cometh | 2016 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Sir John Scott | Character (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sir William Brinton, Fearless Explorer | Character (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Siren Weed | Oct 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sirens of Hell | Event (F) | Whispers in the Dark | CT34 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sirius | Event (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Sister Hope | Ally (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Sister Rosetta | 2005 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sister Sophia | Character (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sister Veronica | Ally (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Sisters of Sorrow | 95-111 | Dulce Et Decorun Est | PELGT32 | 2014 | Pelgrane Press | Trail of Cthulhu
| |
| Sisters of Sorrow | 4-14 | Sisters Of Sorrow | PELGT29 | 2012 | Pelgrane Press | Call of Cthulhu (Classic)
| |
| Sites of Antiquity | 29-30 | Bayt al Azif | 1 | Oct 2018 | Bayt al Azif Inc | Call of Cthulhu (Classic)
| |
| Situations Vacant | 43-46 | White Dwarf | 94 | Oct 1987 | Games Workshop | Call of Cthulhu (Classic)
| |
| Six Characters in Search of an Archive | | Chaosium Digest | v26n12 | Dec 1998 | Chaosium | Call of Cthulhu (Wild West)
| |
| Six Cults a-Culting | Dec 2001 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Now)
| |
| Six Foot plot | 8-11 | Minions | CHA2365 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Sixteen Tons | | Serendipity's Circle | 20 | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Skeletal Jester: Avatar of Nyarlathotep | Oct 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Skeletons | Monster (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Skeptical Pathologist/Grinning Ghoul | Investigator (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Skill Packages | | The Dark Gulf of N'kai | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Skillet Showboat | Location (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| Skills | B:12-21 | Call of Cthulhu | CHA2009-X | 1981 | Chaosium | Call of Cthulhu (Classic)
| |
| Skills | 73-77 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| Skills | 94-121 | Investigator's Handbook | CHA23136 | 2015 | Chaosium | Call of Cthulhu (Classic)
| |
| Skills | 54-79 | Keeper Rulebook | CHA23135 | 2015 | Chaosium | Call of Cthulhu (Classic)
| |
| Skills | 29-47 | The Laundry | CB71200 | 2010 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Skills | 43-77 | Raiders of R'lyeh | | 2017 | Self Published | Raiders of R'lyeh
| |
| Skills | 72-107 | Raiders of R'lyeh Gamemaster's Guide and Complete Rules | | 2017 | Self Published | Raiders of R'lyeh
| |
| Skills for Dark Ages: Averoigne | 63-65 | Worlds of Cthulhu | 1 | Aug 2004 | Pegasus Press | Call of Cthulhu (Dark Ages)
| |
| Skills for the 1920s | 48-55 | 1920s Investigator's Companion Vol. II | CHA2346 | 1994 | Chaosium | Call of Cthulhu (Classic)
| |
| Skills Revisited | 177-203 | The Keeper's Companion Vol 1 | CHA2388 | 2000 | Chaosium | Call of Cthulhu (Classic)
| |
| Skillz | 80-92 | CthulhuTech | WDF23000 | 2007 | WildFire Games | Framewerk (CthulhuTech)
| |
| Skin Weed | Character (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Skinless One, Awful in Mind and Form | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Skinwalker | 59-77 | Dwellers in Shadow | 0004 | Jul 1996 | Triad Entertainments | Call of Cthulhu (Classic)
| |
| The Skoptsi | 88-105 | Delta Green Countdown | PAG1008 | 1999 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Skull Island | Location (F) | Scooby Doo Set 1 | | n/a | Self Published | Mythos
| |
| Skullpips | | Skullpips | PCG007 | 2017 | Pleasant Company Games | Ancient Terrible Things
| |
| Skulls and Vortex Sanity Tracks | | Eric Johnson Mythos Collection | | n/a | Self Published | Mythos
| |
| Skulls Sanity Track | | Eric Johnson Mythos Collection | | n/a | Self Published | Mythos
| |
| Sky Galleon | Event (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Sky is Falling | 29-32 | Nocturnum: Hollow Winds | CC02 | 1998 | Fantasy Flight Games | Call of Cthulhu (Now)
| |
| Sky Torn Asunder | Event (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Slab | 2019 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Slander and Libel | Support (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Slave to the Undivided Mind | Event (F) | The Gleaming Spiral | CT44 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Slavering Gug | Character (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Slavering Gug | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Slaves and the Lost | 146-157 | Vade Mecum | WDF23001 | 2008 | WildFire Games | Framewerk (CthulhuTech)
| |
| Slaves of the Mother | 160-173 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu
| |
| Slaves of the Mother | 47-61 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu
| |
| Slaves of Tsathoggua | 1-15 | Slaves of Tsathoggua | SoT | 2016 | Kort'thalis Publishing | Crimson Dragon Slayer
| |
| Slaves of Tsathoggua | | Trilogy of Awesome + 1 | ToA+1 | 2016 | Kort'thalis Publishing | Crimson Dragon Slayer
| |
| Sledgehammer | Support (F) | Screams from Within | CT38 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Sleep of Death, What Dreams May Come | | Valkyrie | 13 | 1996 | Partizan Press | Call of Cthulhu (Classic)
| |
| Sleep of Reason | Support (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sleep of Reason | Support (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Sleep of the Dead | Event (F) | Sleep of the Dead | CT30 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sleep Perchance to Dream? | | Dagon | 13 | Jun 1986 | Self Published | Call of Cthulhu (Classic)
| |
| Sleep Therapist | Character (F) | Sleep of the Dead | CT30 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Sleeper | | The Sleeper | CW-F2 | 2015 | Petersen Games | Cthulhu Wars
| |
| Sleeper Agents | 5-34 | World War Cthulhu: Europe Ablaze | CB71940 | 2014 | Cubicle 7 | Call of Cthulhu (WWII)
| |
| The Sleeper Awakens! | Event (F) | Spawn of Madness | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Sleeper Awakens! | Event (F) | Spawn of Madness | CT12e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sleepin' wit' da Fishes | Event (F) | That Which Consumes | CT45 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sleeping Pills | Support (F) | The Spawn of the Sleeper | CT19 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sleepless Nights | Event (F) | The Spawn of the Sleeper | CT19 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Sleepwalker | Character (F) | The Antediluvian Dreams | CT21 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sleepwriting | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Sleigh Ride | 105-126 | Fearful Passages | CHA2335 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Sleight of Hand | Event (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sleight Return | 32-33 | The Unspeakable Oath | 18 | Dec 2010 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Sleipnir | 43-50 | The Pastores | CHA0313 | 2005 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| The Sleipnir Club | 49-57 | A Peculiar Pentad | OWC4006 | 2009 | Super Genius | Call of Cthulhu (Classic)
| |
| Slenderman | Character (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Slime Covered Dhole | Character (F) | Initiations of the Favored | CT42 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Slime Mold | Character (F) | In Memory of Day | CT27 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Slip in Time? | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| A Slither in the Dark | 96, 99, 100 | Dragon | 222 | Oct 1995 | TSR | Call of Cthulhu (Classic)
| |
| Slither Rats | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Slithering Formless Spawn | Character (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| A Sliver of Starlight | | A Sliver of Starlight | | Aug 2021 | Chaosium | Call of Cthulhu (Now)
| |
| Slow Boat | 65-78 | Fearful Passages | CHA2335 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Slow Boat to China | 205-234 | Pulp Cthulhu | CHA23107 | 2016 | Chaosium | Call of Cthulhu (Classic)
| |
| Slumming | Event (C) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Slump-Fast | Sep 2008 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Small Ghouls | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Small Ghouls | Character (C) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Small Price to Pay | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Small Price to Pay | Event (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Small Things Forgotten | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Small Time Magician | Character (F) | The Twilight Beckons | CT40 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Smartphone +2 of Shiny | 30-41 | License to Summon | CB71205 | 2012 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Smatter Haulers & Stick Swingers | | Smatter Haulers & Stick Swingers | | May 2021 | Chaosium | Call of Cthulhu (Gaslight)
| |
| The Smedley House | 53-54 | The Unspeakable Oath | 22 | Jan 2013 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Smiling Jack and Mr Smith | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Smiling Jack and Mr Smith | 2000 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Smith and Wesson Model 500 Magnum | 35 | Protodimension | 2 | Aut 2009 | Kinstaff Media | Call of Cthulhu (Now)
, Dark Conspiracy
| |
| Smithsonian Institution | Location (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Smoke Green | | Smoke Green | cr6202 | 2019 | Cthulhu Reborn | Call of Cthulhu (Classic)
| |
| Smoke Serpent | Character (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Smokestack Horror | 74-88 | Halloween Horror 2 | CHA0333 | 2006 | Chaosium | Call of Cthulhu (Now)
| |
| Smugglers | Character (F) | The Wailer Below | CT37 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Smugglers Cove | 41-44 | Colonial Terrors | CHA0405 | 2011 | Chaosium | Call of Cthulhu (Strange Aeons: 1760s)
| |
| Smuggler's Cove | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Smuggler's Cove | 25-26 | Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Smuggler's Cove | 1990 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Smuggler's Run | 28-38 | Adventures Unlimited | 2 | Sum 1995 | Bootstrap Press | Call of Cthulhu (Classic)
| |
| Smugglers Tunnels | Location (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| The Smugglers' Tunnels | 121-130 | Escape from Innsmouth | CHA2338 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| The Smugglers' Tunnels | 122-131 | Escape from Innsmouth | CHA2371 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Smuggling | 56 | The Unspeakable Oath | 24 | Jul 2014 | Pagan Publishing | Call of Cthulhu (Now)
| |
| The Smurl Poltergeist | Oct 2005 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Snails | 2006 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Snake in Blood | | Chaosium Digest | v26n06 | Aug 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Snake Island | 206-221 | The Two-Headed Serpent | CHA23125 | 2017 | Chaosium | Call of Cthulhu (Classic)
| |
| Snake Totem | Support (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Snake-Den | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Snakes | 103-107 | Ye Booke of Tentacles | 1 | 1998 | The Chaos Society | Call of Cthulhu (Classic)
| |
| Snakes Alive II: The Statistics | 52 | Games Master International | 14 | Sep 1991 | Newsfield | Call of Cthulhu (Classic)
| |
| Snakes Alive! | 52-54 | Games Master International | 12 | Jul 1991 | Newsfield | Call of Cthulhu (Classic)
| |
| Snakes on a Plane | 2016 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Sneak Thief | Character (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sniper Rifle | Support (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Snoqualmie Falls | Location (F) | Seattle | | n/a | Self Published | Mythos
| |
| Snow Graves | Support (F) | The Mountains of Madness | CT16 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Snowflake Valley | 15-48 | Nocturnum: Long Shades | CC01 | 1997 | Fantasy Flight Games | Call of Cthulhu (Now)
| |
| Snowmageddon! | Jan 2019 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Snowmobile | Support (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Snows of an Early Winter | 2-96 | Snows of an Early Winter | OWC4007 | 2009 | Super Genius | Call of Cthulhu (Now)
| |
| Snuff | 2006 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| So Doctor, You Can Cure My Iatrophobia | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Social Insecurity Administration | 2018 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Social Life | 15 | Green and Pleasant Land | CHA2320 | 1987 | Chaosium | Call of Cthulhu (Classic)
| |
| Social Life | 52-63 | Miskatonic University | CHA2352 | 1995 | Chaosium | Call of Cthulhu (Classic)
| |
| Societe Royale De Geographie D'Egypte | Location (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Societies | 65-76 | De Profundis | CB71401 | 2010 | Cubicle 7 | De Profundis
| |
| Societies | 87-96 | Secrets of San Francisco | CHA23108 | 2006 | Chaosium | Call of Cthulhu (Classic)
| |
| Societies, Cults, and Mysteries | 102-111 | Secrets of Morocco | CHA23105 | 2008 | Chaosium | Call of Cthulhu (Classic)
| |
| The Society Della Santa Fe | | Chaosium Digest | v12n11 | Jan 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Society of Madness | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Society Page Editor | Character (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Sodality of St Benedict | 106-115 | Cultists Under the Bed | CB71206 | 2013 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| SOE and Network N Training Establishments | 99-118 | World War Cthulhu: The SOE Handbook | CB71942 | 2015 | Cubicle 7 | Call of Cthulhu (WWII)
| |
| Sogailraugh | 1-4 | Sogailraugh | | 2006 | Self Published | Call of Cthulhu (Dark Ages)
| |
| Solar Eclipse | Event (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Soldiers of Pen and Ink | 6-62 | Soldiers of Pen and Ink | PELGT36 | 2014 | Pelgrane Press | Trail of Cthulhu
| |
| The Solo Investigators Handbook | | The Solo Investigators Handbook | | Feb 2019 | 5E Solo Gamebooks | Call of Cthulhu (Classic)
| |
| Solomon Bites the Worm | | Chaosium Digest | v32n04 | Jul 2000 | Chaosium | Call of Cthulhu (Now)
| |
| Some Notes on the Biology of the Shoggoths | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Some Notes on the Eltdown Shards | 3-4 | Dagon | 11 | Jan 1986 | Self Published | Call of Cthulhu (Classic)
| |
| Some Wounds Never Heal | | Valkyrie | 12 | 1996 | Partizan Press | Call of Cthulhu (Classic)
| |
| Someone at the Window | Event (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Something About Cats | | Something About Cats | | 2020 | Petersen Games | Cthulhu Wars
| |
| Something Else About Cats | 11-13 | The Whisperer | 4 | Spr 2001 | Severn Valley Press | Call of Cthulhu (Dreamlands)
| |
| Something Fishy at Fort Delaware: The Adventure of the Pea Patch Puzzle | 28-30 | The Transactions of the Royal Martian Geographical Society | 4 | 1992 | Self Published | Call of Cthulhu (Gaslight)
| |
| Something for Christmas | 2006 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Something From Down There | 209-222 | Down Darker Trails | CHA23151 | 2017 | Chaosium | Call of Cthulhu (Wild West)
| |
| Something in Stone | 35 | The Unspeakable Oath | 5 | May 1992 | Pagan Publishing | Call of Cthulhu (Gaslight)
| |
| Something's Hiding in the Fourgon | 2:36 | Horror on the Orient Express Music | AOCD7004 | 2005 | A O Music | Call of Cthulhu (Classic)
| |
| Somnambulant Dreamer | Character (F) | That Which Consumes | CT45 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Son of the Sleeper | Character (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Son of This | 2013 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Son of Yeb | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Son of Yeb | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Son of Yeb | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Son of Yog-Sothoth | Monster (U) | Expeditions of Miskatonic University | CAO1301-1 | 1996 | Chaosium | Mythos
| |
| Sonata For Snow | 2018 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Song and Dance | 109-130 | Tales of the Crescent City | GGP1401 | 2014 | Golden Goblin Press | Call of Cthulhu (Classic)
| |
| Song of Charybdis | Event (F) | Shadow of the Monolith | CT52 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Song of Harlem | 11-18 | Harlem Unbound | 1 | 2017 | Darker Hue Studios | Call of Cthulhu (Classic)
, Gumshoe
| |
| Song of Hastur | Event (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Song of Hastur | Spell (R) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Song of Suffering | Support (F) | Words of Power | CT54 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Song of the Spheres | 40-52 | In the Shadows | CHA2357 | 1995 | Chaosium | Call of Cthulhu (Classic)
| |
| Song of the Spheres | Support (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Song of the Star Walkers | | Song of the Star Walkers | | 2012 | Self Published | Call of Cthulhu (Delta Green)
| |
| Song of the Stellar Larvae | Spell (U) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| The Songs of Fantari | 43-60 | Fatal Experiments | CHA2328 | 1990 | Chaosium | Call of Cthulhu (Classic)
| |
| Sonje Olsen | Character (F) | Written and Bound | CT53 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sons of Carcosa | Character (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sons of Hermes | Character (F) | Into Tartarus | CT51 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Soothsayer | Character (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Soothsayer | Character (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Soratorius Albion: New Spells | 92-94 | Kingdom of the Blind | CHA0359 | 2008 | Chaosium | Call of Cthulhu (Classic)
| |
| The Sorcerer's Apprentice | Adventure (R) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Sorcerer's Apprentice Deck | | Chaosium Digest | v21n07 | Sep 1997 | Chaosium | Mythos
| |
| The Sorcerors Apprentice Deck | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| The Sores | 78-84 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now)
| |
| Sororum ex Noëma (Sisters of Na’amah) | Oct 2015 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Invictus)
| |
| Sorrow in Tsavo | | Sorrow in Tsavo | | Oct 2020 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Sorrow's Glen | 57-75 | Lurking Fears | 0001 | Jan 1990 | Triad Entertainments | Call of Cthulhu (Classic)
| |
| A Sort of Homecoming | 66-89 | Burning Horizon | WDF23301 | 2011 | WildFire Games | Framewerk (CthulhuTech)
| |
| The Sosnovka Raid | | The Sosnovka Raid | | Apr 2021 | Chaosium | Call of Cthulhu (WWII)
| |
| Soul Singing | Spell (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Soulful Jazz Singer/Gifted Musician | Investigator (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| The Souls of Briarcroft | | The Souls of Briarcroft | | Oct 2021 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Souls of Harlem | 233-257 | Harlem Unbound | 1 | 2017 | Darker Hue Studios | Call of Cthulhu (Classic)
, Gumshoe
| |
| Sound of the Whippoorwills | Event (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Source and the End | 151-167 | The Stars Are Right! | CHA23100 | 2004 | Chaosium | Call of Cthulhu (Now)
| |
| Source Book | 243-245 | Raiders of R'lyeh | | 2017 | Self Published | Raiders of R'lyeh
| |
| Sourcebook | 1-61 | The Mysteries of Mesoamerica | PAG1012 | 2009 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Sourcebook Additions | 130-137 | Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| South Woods Memorial Cemetery | Location (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Southern Base Camp | Location (F) | Antarctica | | n/a | Self Published | Mythos
| |
| Southern Comfort | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Southern Discomfort | | Southern Discomfort | EDN7201 | 2006 | Eden Studios | Unisystem (Eldritch Skies)
| |
| Southern Discomfort | Mar 2008 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Southside Speakeasy | Support (F) | Initiations of the Favored | CT42 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Souvenir of Mars | 48-49 | Challenge | 43 | Apr 1990 | Games Designers Workshop | Call of Cthulhu (Gaslight)
, Space 1889
| |
| The Soviet War Machine | 27-34 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| The Space Between | 178-216 | Nameless Horrors | CHA23133 | 2015 | Chaosium | Call of Cthulhu (Now)
| |
| Space Mead | Artifact (U) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Space Needle (Business) | Location (F) | Seattle | | n/a | Self Published | Mythos
| |
| Space Needle (Government) | Location (F) | Seattle | | n/a | Self Published | Mythos
| |
| Space Suit | Artifact (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Spacecraft Floorplans | 65 | Protodimension | 1 | Sum 2009 | Kinstaff Media | Call of Cthulhu (Now)
| |
| The Space-Eaters | 76-79 | Challenge | 46 | Oct 1990 | Games Designers Workshop | Call of Cthulhu (Classic)
| |
| Space-Eaters | Character (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Spaceman | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Spaces Between | 2017 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Spaceships | 102-125 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars)
| |
| Spankham Asylum | | Spankham Asylum | cth004 | 2012 | Postmortem Studios | Call of Cthentacle
| |
| Spare Some Change? | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Spare Some Change? | 1996 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Spare the Rod | 82-99 | More Adventures in Arkham Country | MRP0007 | 2010 | Miskatonic River Press | Call of Cthulhu (Classic)
| |
| Spark of Life | | Spark of Life | | Jun 2019 | Chaosium | Call of Cthulhu (Classic)
| |
| The Spawn | 8-39 | The Great Old Ones | CHA2321 | 1989 | Chaosium | Call of Cthulhu (Classic)
| |
| Spawn from K'n-Yan | Character (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Spawn of Azathoth | B:53-61 | Spawn of Azathoth | CHA2316-X | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| Spawn of Cthulhu | Character (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Spawn of Hali | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Spawn of Hastur | Character (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Spawn of Madness | Event (F) | The Thing from the Shore | CT23 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Spawn of Sebek | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Spawn of the Black Goat | | Mists of the Aeons | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Spawn of the Deep | 103-111 | Blood Brothers | CHA2329 | 1990 | Chaosium | Call of Cthulhu (Classic)
| |
| Spawn of the Sleeper | Event (F) | The Spawn of the Sleeper | CT19 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Spawn of Tleche-Naka | 19-23 | The Unspeakable Oath | 25 | Jul 2018 | Pagan Publishing | Delta Green
| |
| The Spawn of Yog-Sothoth | | The Spawn of Yog-Sothoth | | 1988 | Unknown | The Spawn of Yog-Sothoth
| |
| Spawn Toss | 2013 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Speak to the Dead | Event (F) | Whispers in the Dark | CT34 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Speaker for the Black Pharaoh | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Speaking Cells | Support (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Speaking with the Spirits | 36-40 | Dragon | 139 | Nov 1988 | TSR | Call of Cthulhu (Classic)
| |
| The Spear of Destiny | | Ken Writes About Stuff | v3n2 | Apr 2015 | Pelgrane Press | Trail of Cthulhu
| |
| The Spear of Destiny (Document #8353) | 1999 | delta-green.com | | n/a | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| The Spear of Y'golonac | 39-61 | Protodimension | 3 | Win 2009 | Kinstaff Media | Call of Cthulhu (Now)
| |
| The Spear of Y'Golonac | 1-35 | The Spear of Y'Golonac | | 2009 | Self Published | Call of Cthulhu (Now)
| |
| Special Agent * | 2010 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Special Agent Callahan | Character (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Special Agent Clarkston | Character (F) | Aspirations of Ascension | CT43 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Special Agent Ivana Lake | | Mists of the Aeons | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Special Delivery | 2014 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Special Delivery | 12-13 | Unveiled Threats | WDF23600 | 2011 | WildFire Games | Framewerk (CthulhuTech)
| |
| Special Forces Organisation | 29-36 | As Above, So Below | CB71209 | 2015 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| The Special Menu | 134-139 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now)
| |
| Special Occasions | 60 | The London Guidebook | CHA2347 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Special Operations Team | Character (C) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Special Operative | Character (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Special Reports | 84-85 | Ancient Enemies | WDF23100 | 2010 | WildFire Games | Framewerk (CthulhuTech)
| |
| Special Shotguns | 1-10 | Special Shotguns | | 2012 | Drakat Games | Call of Cthulhu (Classic)
| |
| The Specimen | | Unknown | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Specimen | 29 | The Unspeakable Oath | 10 | Jan 1994 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Specimen Bags | Support (F) | The Mountains of Madness | CT16 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Specimen Room | Support (F) | Murmurs of Evil | CT35 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Spectral Hunter | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| A Spectre is Haunting Europe | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Speech Machine | Artifact (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Spell Categories | 22-25 | The Grand Grimoire of Cthulhu Mythos Magic | CHA23141 | 2017 | Chaosium | Call of Cthulhu (Classic)
| |
| Spell-bound Shoggoth | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Spell-bound Shoggoth | Character (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Spells | 55-64 | First Book of Things | CHA0307 | 2004 | Chaosium | Call of Cthulhu (Classic)
| |
| Spells | 20-32 | Spirits & Dreams of the Viking Age | CHA0390 | 2010 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Spells for Starting Characters | | Chaosium Digest | v01n06 | Feb 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| The Spells of Karakal | | Chaosium Digest | v19n12 | Jun 1997 | Chaosium | Call of Cthulhu (Dreamlands)
| |
| Spells of N'tse-Kaambl | | Chaosium Digest | v17n02 | Nov 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Spells, Feats, and Skills | 225-231 | H.P. Lovecraft's Arkham | CHA8803 | 2003 | Chaosium | Call of Cthulhu (Classic)
| |
| Sphere | | Chaosium Digest | v22n11 | Dec 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Sphere of Influence | 59-74 | Mysteries of Sudan | CHA0362 | 2009 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Sphere of Nath | Artifact (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| The Sphinx | Location (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| The Sphinx Tomb | 90-101 | Five Go Mad in Egypt | CHA0381 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| The Spider Man | 8-9 | Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Spider Man | 1990 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Spider-Man | 6 | The Unspeakable Oath | 3 | Aug 1991 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Spilsbury #9485 | 45-49 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now)
| |
| Spin Control | 80-83 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars)
| |
| Spinning the Story | Event (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Spiralling | 27-43 | The Black Seal | 3 | Nov 2003 | Brichester University Press | Call of Cthulhu (Delta Green)
| |
| Spirit Dagger | Support (F) | Perilous Trials | CT41 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Spirit of a Thief | 537-553 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Classic)
| |
| Spirit of a Thief | 16-28 | Opifex Bimonthly | 2 | 1996 | Self Published | Call of Cthulhu (Classic)
| |
| Spirit of a Thief | 1-17 | Spirit of a Thief | | 1996 | Self Published | Call of Cthulhu (Now)
| |
| Spirit of Industry | | New Tales of the Miskatonic Valley | 3009 | 2020 | Stygian Fox | Call of Cthulhu (Classic)
| |
| Spirit of Industry | 47-61 | New Tales of the Miskatonic Valley | MRP0003 | 2008 | Miskatonic River Press | Call of Cthulhu (Classic)
| |
| The Spirit of Liberty | | The Spirit of Liberty | | Apr 2021 | Chaosium | Call of Cthulhu (Gaslight)
| |
| The Spirit of Mania | Character (F) | Into Tartarus | CT51 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Spirit of the Mountain | 43-47, 50-54 | White Dwarf | 99 | Mar 1988 | Games Workshop | Call of Cthulhu (Classic)
| |
| The Spirits of London | | The Spirits of London | SFX-3014 | 2017 | Stygian Fox | Call of Cthulhu (Gaslight)
| |
| Spirits Over Arkham | | Spirits Over Arkham | | 1987 | Self Published | Call of Cthulhu (Classic)
| |
| Spirits, Shamans and Magic | 9-13 | Spirits & Dreams of the Viking Age | CHA0390 | 2010 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Spiritual Guidance | Event (F) | Screams from Within | CT38 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Spiritual World | 57-64 | The 7th Edition Guide to Cthulhu Invictus | GGP1801 | 2018 | Golden Goblin Press | Call of Cthulhu (Invictus)
| |
| Spiritualism and Mediumship | 41-47 | Parapsycologist's Handbook | CHA0085 | 2003 | Chaosium | Call of Cthulhu (Classic)
, Call of Cthulhu (Gaslight)
, Call of Cthulhu (Now)
| |
| Splatter Punks | 70-83 | Horror Stories From the Red Room | CHA0413 | 2013 | Chaosium | Call of Cthulhu (Now)
| |
| Splendid Cathuria | Location (U) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Spliting Hairs | 28-29 | Dark Passions | WDF23200 | 2008 | WildFire Games | Framewerk (CthulhuTech)
| |
| Spoiled Milk | | Spoiled Milk | cr6203 | 2019 | Cthulhu Reborn | Call of Cthulhu (Classic)
| |
| S-P-O-N-G-E: Fight the Evil | | S-P-O-N-G-E: Fight the Evil | | 2001 | Self Published | S-P-O-N-G-E: Fight the Evil
| |
| Spooky Space Kook | Monster (F) | Scooby Doo Set 1 | | n/a | Self Published | Mythos
| |
| Spore Bearers | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sport | 70 | The London Guidebook | CHA2347 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Sporting Goods | 27-29 | The Gaslight Equipment Catalogue | CHA0319 | 2005 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Sports | 23-26 | Mysteries of Ireland | CHA0408 | 2012 | Chaosium | Call of Cthulhu (Classic)
| |
| Sports Scholarship | Support (F) | Seekers of Knowledge | CT59 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Spouters | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Spreading the Disease | Support (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Springer Mound and the Canal | 56-67 | Tatters of the King | CHA23104 | 2006 | Chaosium | Call of Cthulhu (Classic)
| |
| Springfield M1903 | Support (F) | The Cacophony | CT39 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Squalid Hamlet | Story (F) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Squalid Hamlet | Story (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Squire Sawyer Whateley | Ally (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| SS Gabrielle | 68-74 | Beyond the Mountains of Madness | CHA2380 | 1999 | Chaosium | Call of Cthulhu (Classic)
| |
| St Amabilis | Support (F) | The Unspeakable Pages | CT57 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| St Augustine | B:14-27 | Spawn of Azathoth | CHA2316-X | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| St Augustine, Florida | 69-93 | Spawn of Azathoth | CHA23101 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| St Basil's Cathedral | Location (F) | Antarctica | | n/a | Self Published | Mythos
| |
| St Christopher's | 2019 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| St Claire | Character (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| St Dymphna's Orphanage: Azathoth's Children | | St Dymphna's Orphanage: Azathoth's Children | | Aug 2021 | Chaosium | Call of Cthulhu (Classic)
| |
| St Hubert's Key | Support (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| St Michael's Gate | 29 | The Unspeakable Oath | 22 | Jan 2013 | Pagan Publishing | Call of Cthulhu (Dark Ages)
| |
| St Raphael's | | St Raphael's | | 2002 | Self Published | Call of Cthulhu (Classic)
| |
| St Swithun's Hole | 94-106 | Avalon - The County of Somerset | CB7352 | 2010 | Cubicle 7 | Call of Cthulhu (Classic)
| |
| St Toad's Church | Support (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| St. Erasmus' Home for Mariners | Support (F) | Kingsport Dreams | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| St. Erasmus' Home for Mariners | Support (F) | Kingsport Dreams | CT13e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| St. John's Churchyard | Location (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Stability and Sanity | 34-40 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu
| |
| Stability and Sanity | 35-40 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu
| |
| Staff of Mano Tiki Tia | Artifact (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| Stage Managing Live Action Play | 1999 | hyperwerx.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Stagecraft | 173-205 | Cthulhu Live | SKP0602 | 2006 | Skirmisher Publishing | Call of Cthulhu (Classic)
| |
| Staid University Professor/Earnest Reporter | Investigator (F) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Stained Glass Props | | hyperwerx.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Stained Glasses | 2001 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Staircase | | The Staircase | | Aug 2021 | Chaosium | Call of Cthulhu (Classic)
| |
| Stalingrad Plexus | | Delta Green Anomalies | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Stalking Hound | Character (F) | Perilous Trials | CT41 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Stalking Terror | | The Stalking Terror | | 2020 | Micro RPG | The Stalking Terror
| |
| Stand Against the Order | Adventure (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Standard Deviation * | 2013 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Star Brothers | | The Star Brothers | | 2019 | Chaosium | Call of Cthulhu (Classic)
| |
| The Star on the Shore | 5-73 | The Star on the Shore | DCG-SS-HC-1 | 2017 | Dark Cult Games | Call of Cthulhu (Classic)
| |
| Star Seed | 271-285 | Shadows Over Scotland | CB7353 | 2011 | Cubicle 7 | Call of Cthulhu (Classic)
| |
| Star Spawn of Cthulhu | Monster (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Star Spawn Priest | Character (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Star Stone of Mnar | Artifact (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Star Trek | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Star Vampire | Monster (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Star Vampire Minion | Character (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Star Vampires | | Ken Writes About Stuff | v1n11 | Feb 2014 | Pelgrane Press | Trail of Cthulhu
| |
| The Star-Devourer | M1-M7 | Different Worlds | 35 | Jul 1984 | Chaosium | Champions
, Superworld
, Villains and Vigilantes
| |
| Stare of the Monster | Feb 2010 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Starfall Over the Plateau of Leng | 2-49 | Age of Cthulhu Vol. VIII: Starfall Over the Plateau of Leng | 7008 | 2014 | Goodman Games | Call of Cthulhu (Classic)
| |
| Staring Statue | Event (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| Starkmoor Hall | 35-? | Arcane Encounters | 4 | Apr 1997 | Future Publishing | Call of Cthulhu (Classic)
, Feng Shui
, Vampyre the Masquerade
| |
| The Starry Wisdom | | Ken Writes About Stuff | v3n12 | Mar 2016 | Pelgrane Press | Trail of Cthulhu
| |
| The Starry Wisdom Cult | 45-56 | Cultists Under the Bed | CB71206 | 2013 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| The Starry Wisdom Cult | 116-121 | Worlds of Cthulhu | 1 | Aug 2004 | Pegasus Press | Call of Cthulhu (Classic)
| |
| Starry Wisdom Deacon | Character (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Starry-Eyed Adherent | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Stars are Aligning | 30-31 | Interface 19.40 | MUH050027AC | 2015 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Interface Zero
, Savage Worlds (Achtung!)
| |
| The Stars are Cruel Promo Card | | The Stars are Cruel Promo Card | | Oct 2015 | Steve Jackson Games | Munchkin
| |
| The Stars are Right | Event (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Stars are Right | Event (U) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Stars Are Right | Event (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Stars Are Right | | The Stars Are Right | SJG1432 | 2009 | Steve Jackson Games | The Stars Are Right
| |
| The Stars are Right | 2001 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Stars Are Right for Pizza | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Stars are Righteous, Dude! | Mar 2018 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (Now)
| |
| The Stars Aren't Right | | The Stars Aren't Right | | Apr 2021 | Chaosium | Call of Cthulhu (Strange Aeons: Future)
| |
| The Stars Turn, Turn, Turn | 126-128 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| The Starshrine | 78-103 | Lurking Fears | 0001 | Jan 1990 | Triad Entertainments | Call of Cthulhu (Classic)
| |
| Star-Summoned Dhole | Character (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Starting Your Call of Cthulhu Campaign | 30-37 | The Unspeakable Oath | 22 | Jan 2013 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Startling Discovery | Event (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Starving Artist | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Starving Ones | 13-28 | Children of the Storm | CHA0394 | 2010 | Chaosium | Call of Cthulhu (Classic)
| |
| State Representative | Character (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Statement | Adventure (F) | Eric Johnson Mythos Collection | | n/a | Self Published | Mythos
| |
| The Statement of Randolph Carter | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Station Eismitte | Support (F) | Seekers of Knowledge | CT59 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Status of the Sorcerer | A:5-32 | Statue of the Sorcerer, The Vanishing Conjurer | CHA2318 | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| Stay | | Serendipity's Circle | 12 | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Stay Away! | | Stay Away! | | 2014 | Pendragon Game Studio | Stay Away!
| |
| Stay Away! Promo Set | | Stay Away! Promo Set | | 2014 | Ares Games | Stay Away!
| |
| Stay out of the Forest on Thurdays | Feb-2021 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Steadfast Deck | | Chaosium Digest | v21n04 | Aug 1997 | Chaosium | Mythos
| |
| The Steadfast Deck | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| Steal Life | Spell (R) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Stealing the Glory | Event (F) | The Terror of the Tides | CT22 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Stealth Fighter | Artifact (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Stealthy Byakhee | Character (F) | The Terror of the Tides | CT22 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Stealthy Zoog | Character (F) | Journey to Unknown Kadath | CT31 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Steering Group 4 | 1998 | Bristol Consortium | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Stella Clark | | Stella Clark | AHC51 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Stella Lauden | Ally (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Step on a Non-Euclidean Brick Toy Promo Card | | Step on a Non-Euclidean Brick Toy Promo Card | | Oct 2016 | Steve Jackson Games | Munchkin
| |
| Steve Clarney | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Steve Clarney, Soldier of Fortune | Character (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sticks and Twigs Like Men | 1-25 | Sticks and Twigs Like Men | | 2005 | Self Published | Call of Cthulhu (Classic)
| |
| Sticky Cthulhu | | Sticky Cthulhu | | 2021 | IELLO | Sticky Cthulhu
| |
| A Still Afternoon | Event (F) | Sesqua Valley | | n/a | Self Published | Mythos
| |
| Still Life | Support (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Still Life Exhibition | Support (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Still Waters | 40-55 | The Great Old Ones | CHA2321 | 1989 | Chaosium | Call of Cthulhu (Classic)
| |
| Stillness | 77-102 | Nocturnum: Long Shades | CC01 | 1997 | Fantasy Flight Games | Call of Cthulhu (Now)
| |
| Stilton Overload | | Hastur Hobbies | | n/a | Self Published | Mythos
| |
| Stone Calendar | Support (F) | The Cacophony | CT39 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Stone Disk | Artifact (F) | Sesqua Valley | | n/a | Self Published | Mythos
| |
| Stone Mausoleum | Location (F) | Sesqua Valley | | n/a | Self Published | Mythos
| |
| Stone of the Heart | Event (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Stone on the Peak | Character (F) | Dunwich Denizens | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Stone on the Peak | Character (F) | Dunwich Denizens | CT15e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Stone Pillar | Location (F) | Sesqua Valley | | n/a | Self Published | Mythos
| |
| Stone Shifter | 44-47 | Minions | CHA2365 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Stonegarden Arizona | 129-150 | Shadows Over Stillwater | CHA23156 | 2019 | Chaosium | Call of Cthulhu (Wild West)
| |
| Stonehenge | Location (C) | Expeditions of Miskatonic University | CAO1301-1 | 1996 | Chaosium | Mythos
| |
| Stones of Doom | 1997 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Stones of Doom (2) | 1997 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| A Stone's Throw From Atlantis | | A Stone's Throw From Atlantis | | Apr 2021 | Type40 | Call of Cthulhu (Classic)
| |
| Stool Pigeon | Character (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Stop, Thief! | Oct 2008 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Storm Down Under | 126-140 | Burning Horizon | WDF23301 | 2011 | WildFire Games | Framewerk (CthulhuTech)
| |
| Storm From a Teacup | | Storm From a Teacup | | Aug 2021 | Chaosium | Call of Cthulhu (Classic)
| |
| Story Creation | 230-242 | Raiders of R'lyeh | | 2017 | Self Published | Raiders of R'lyeh
| |
| Story Creation | 440-456 | Raiders of R'lyeh Gamemaster's Guide and Complete Rules | | 2017 | Self Published | Raiders of R'lyeh
| |
| A Story Idea for the Black Stone | | Chaosium Digest | v03n06 | Aug 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| StoryGuide Screen | 1-4 | CthulhuTech GM Reference Screen | WDF23610 | 2010 | WildFire Games | Framewerk (CthulhuTech)
| |
| Storytelling | 75-83 | Harlem Unbound | 1 | 2017 | Darker Hue Studios | Call of Cthulhu (Classic)
, Gumshoe
| |
| Storytelling Advice | 243-257 | Eldritch Skies | BPI7500 | 2012 | Battlefield Press | Unisystem (Eldritch Skies)
| |
| Stowaways | 122-141 | World War Cthulhu: Europe Ablaze | CB71940 | 2014 | Cubicle 7 | Call of Cthulhu (WWII)
| |
| Straight Outta Crompton * | 2014 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Straitjacket | Support (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Strange Aeons | Event (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Strange Aeons | | Strange Aeons | | 2009 | Uncle Mike's Worldwide | | |
| Strange Britain | 83-118 | Cthulhu by Gaslight | CHA23123 | 2012 | Chaosium | Call of Cthulhu (Gaslight)
| |
| The Strange Case of Charles Fort | Adventure (R) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| The Strange Case of Mr Cardew | | The Strange Case of Mr Cardew | | Oct 2020 | Chaosium | Call of Cthulhu (Classic)
| |
| The Strange Case of the Brown Mountain Lights | 61-92 | The Phantom of Wilson Creek | CHA0404 | 2013 | Chaosium | Call of Cthulhu (Classic)
| |
| The Strange Case of the Mising Painting | May 2020 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Strange Case of the Rusty Corpse | | PerChance | 6 | Sep 1991 | Self Published | Call of Cthulhu (Gaslight)
| |
| Strange Company (Document #8300) | 1999 | delta-green.com | | n/a | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Strange Delusions | Support (F) | The Path to Y'ha-nthlei | CT24 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Strange Eons | | Chaosium Digest | v04n10 | Nov 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| The Strange High House in the Mist | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Strange Hight House in the Mist | 9-13 | H.P. Lovecraft's Kingsport | CHA8804 | 2003 | Chaosium | Call of Cthulhu (Classic)
| |
| Strange Humanoid Encounter | Event (R) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Strange Inheritance | Event (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Strange Laws Beyond Our Ken | | Strange Laws Beyond Our Ken | | 2016 | Atlas Games | Lost in R'lyeh
| |
| Strange Librarian | Character (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Strange Librarian | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Strange Librarian | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Strange Librarian | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Strange Librarian | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Strange Little Girl | 76-92 | Avalon - The County of Somerset | CB7352 | 2010 | Cubicle 7 | Call of Cthulhu (Classic)
| |
| Strange Materials | 1-3 | Strange Materials | JCG032 | 2019 | Just Crunch Games | The Cthulhu Hack
| |
| Strange Remnants | | Strange Remnants | EH04 | 2015 | Fantasy Flight Games | Eldritch Horror
| |
| Strange Sisterhood | Support (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Strange Spectacles of Dr Scolius | 28 | The Unspeakable Oath | 16/17 | Mar 2001 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Strange Visitors | Character (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Strange Vistas Submission Request | 17-19 | Opifex Bimonthly | 7 | May 1997 | Self Published | Call of Cthulhu (Classic)
| |
| Strangers in a Strange Land - British Characters | 27-34 | Mysteries of the Raj | CHA0391 | 2010 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Strangers on a Train | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Stranger's Race Vobster, Somerset | 82-83 | The Black Seal | 2 | Mar 2003 | Brichester University Press | Call of Cthulhu (Now)
| |
| The Strangue Bible | 28-29 | The Unspeakable Oath | 12 | Jun 1995 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Strategic Industries | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Strategic Planning | Event (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Stray Cat Strut | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Stray Cat Strut | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Stray Cat Strut | 1990 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Street of Pillars | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Street of Tears | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Street Preacher | Character (C) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Street Prophet | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Street Scholar | Character (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Street Talk | | Dagon | 7 | May 1985 | Self Published | Call of Cthulhu (Classic)
| |
| Street Tough | Character (F) | Touched by the Abyss | CT58 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Streets of Arkham | | Streets of Arkham | MAD25 | 2017 | Fantasy Flight Games | Mansions of Madness
| |
| Streets of Fear | 12 | Fantasy Chronicles | 1 | Jul 1985 | Fantastic Publications | Call of Cthulhu (Now)
| |
| Street-Smart Rookie | Character (C) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Stress Disorders | 294-299 | Delta Green: Targets of Opportunity | PAG2108 | 2010 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| A Strict Protein Diet | 51-59 | Protodimension | 11 | Win 2012 | Kinstaff Media | Call of Cthulhu (Now)
| |
| Strike the Shepherd | Event (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Striking Tentacle | Event (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| String Quartet | 2003 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Strolling About | 1:00 | Horror on the Orient Express Music | AOCD7004 | 2005 | A O Music | Call of Cthulhu (Classic)
| |
| Struggling Artist | Character (F) | The Terror of the Tides | CT22 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Strung Up! | Event (F) | That Which Consumes | CT45 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Stuck in the Slammer | Support (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Student Archaeologist | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Student Archaeologist | Character (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Student Of the Profane | Character (F) | Spawn of Madness | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Student Of the Profane | Character (F) | Spawn of Madness | CT12e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Study in Darkness | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| A Study in Emerald | | A Study in Emerald | | 2013 | Treefrog Games | A Study in Emerald
| |
| A Study in Emerald | | A Study in Emerald | | 2016 | Grey Fox Games | A Study in Emerald
| |
| A Study in Emerald | | A Study in Emerald | | 2017 | Treefrog Games | A Study in Emerald
| |
| The Study of Apt. 7-D The Bradford | Location (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Studying the Void | Event (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Stuff That Heroes Are Made Of | 28-29 | The Whisperer | 4 | Spr 2001 | Severn Valley Press | Call of Cthulhu (Classic)
| |
| Stygian Eye | Support (F) | Into Tartarus | CT51 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Stygian Idol | Support (F) | The Spoken Covenant | CT36 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Stylish Death | 43 | The Black Seal | 2 | Mar 2003 | Brichester University Press | Call of Cthulhu (Delta Green)
| |
| Sub Rosa | 42-43 | Unveiled Threats | WDF23600 | 2011 | WildFire Games | Framewerk (CthulhuTech)
| |
| Submachine Guns | 86-92 | Investigator Weapons Volume 1: The 1920s and 1930s | 60-IHB01 | 2012 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Submachine Guns | 148-167 | Investigator Weapons Volume 2: Modern Day | 60-IHB02 | 2015 | Sixtystone Press | Call of Cthulhu (Now)
| |
| Subterranean Deep One | Oct 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Subterranean London | 54-57 | The London Guidebook | CHA2347 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Subtle Influences | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Suburban Hamlet of West Norwood | 29-53 | Five Go Mad in Egypt | CHA0381 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| The Suburbs | 65-106 | Secrets of Los Angeles | CHA23111 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Succo | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Invictus)
| |
| Succumb To Temptation | Event (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Sucker Punch Promo Card | | Sucker Punch Promo Card | | Aug 2017 | Steve Jackson Games | Munchkin
| |
| The Sudan | 84-114 | Utatti Asfet | CHA2360 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Sudden Cyclone | Event (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Sudden Storm | | The Sudden Storm | | May 2019 | Chaosium | Call of Cthulhu (Classic)
| |
| Suffer Little Children | 14-24 | Day of the Beast | CHA2374 | 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Suffer not a Wizard to Live | 15-34 | Undying Leaders | CHA0343 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Suffer the Child | 2005 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Suffer the Children | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Sufferers' Guild | 71-82 | The Big Book of Cults | CHA0316 | 2005 | Chaosium | Call of Cthulhu (Now)
| |
| Suffering Artist | 2001 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Sufficient Unto the Day | 28-46 | Worlds of Cthulhu | 3 | Jun 2005 | Pegasus Press | Call of Cthulhu (Now)
| |
| Suggested Further Reading/Viewing | 300-308 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| Suggested Rule Changes | | Chaosium Digest | v02n01 | Apr 1993 | Chaosium | None
| |
| Suggested Sources for Victorian Roleplayers | 170-173 | Cthulhu by Gaslight | CHA23123 | 2012 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Suggestions for Effectively Running the Campaign and Several Plot Seeds | 5-18 | The Primal State | CHA0344 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Suggestions for Keepers | 12-22 | The Keeper's Companion Vol 1 | CHA2388 | 2000 | Chaosium | Call of Cthulhu (Classic)
| |
| Suicide Hour | Oct 2017 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (Atomic)
| |
| Suitable for Framing | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Suited and Booted | 46-56 | The Unspeakable Oath | 19 | Mar 2011 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Sukakpak | 1-7 | Sukakpak | | 2011 | Self Published | Cthulhu Dark
| |
| Sukakpak | 9-15 | The Unspeakable Oath | 21 | Jul 2012 | Pagan Publishing | Call of Cthulhu (Strange Aeons: 1975)
| |
| The Sultan's Treasure | 28-35 | Adventures Unlimited | 5 | Spr 1996 | Bootstrap Press | Call of Cthulhu (Classic)
| |
| Summer Classes | Event (F) | The Thing from the Shore | CT23 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Summon Great Cthulhu | Adventure (R) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Summon Great Cthulhu | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| Summon Great Cthulhu Deck | | Chaosium Digest | v21n07 | Sep 1997 | Chaosium | Mythos
| |
| Summon Great Cthulhu Deck | | Thastygliax's Vault | | n/a | Self Published | Mythos
| |
| Summon Spectral Hunter | Support (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Summon the Sleeper | Support (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Summoning Circle | Support (F) | The Terror of the Tides | CT22 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sun Spots | Event (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Sun Spots Game Master's Kit | | Sun Spots Game Master's Kit | W8_005 | 2018 | Weird 8 | Call of Cthulhu (Classic)
| |
| The Sun Worshipper | Adventure (U) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Sunday Painter | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Sundial of Amen-Tet | 37-56 | Lurking Fears | 0001 | Jan 1990 | Triad Entertainments | Call of Cthulhu (Classic)
| |
| Sundown | | Sundown | | 2011 | Imaginary Empire | Call of Cthulhu (Wild West)
| |
| Sunken Dreams | | Sunken Dreams | | Jan 2020 | Chaosium | Call of Cthulhu (Classic)
| |
| Sunken U-Boat | Location (F) | Scooby Doo Set 3 | | n/a | Self Published | Mythos
| |
| Sunset on Sandy Gulch | 51-67 | Worlds of Cthulhu | 6 | Jan 2009 | Pegasus Press | Call of Cthulhu (Wild West)
| |
| Super 8 | 70-87 | Worlds of Cthulhu | 2 | Feb 2005 | Pegasus Press | Call of Cthulhu (Now)
| |
| Superheroes Vs The Cthulhu Mythos | | Superheroes Vs The Cthulhu Mythos | | Nov 2020 | Chaosium | Call of Cthulhu (Now)
| |
| The Supernal Prism | Support (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Supernatural Effects | 119-123 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| Supernatural Investigator | Character (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Supernatural West | 135-162 | Down Darker Trails | CHA23151 | 2017 | Chaosium | Call of Cthulhu (Wild West)
| |
| Superstitions | 43-44 | Mysteries of Ireland | CHA0408 | 2012 | Chaosium | Call of Cthulhu (Classic)
| |
| Superswarm | Aug 2011 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Now)
| |
| The Supplicant | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Supporting Cast | 77-78 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu
| |
| The Supporting Cast | 9-10 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu
| |
| Supporting Cast | 101-113 | Harlem Unbound | 1 | 2017 | Darker Hue Studios | Call of Cthulhu (Classic)
, Gumshoe
| |
| Supressed Memories | | Supressed Memories | MAD22 | 2016 | Fantasy Flight Games | Mansions of Madness
| |
| Surprise Meeting | Event (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Surprising Find | Event (F) | Touched by the Abyss | CT58 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Surrealist | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Surrey Enigma | 22-26 | White Dwarf | 69 | Sep 1985 | Games Workshop | Call of Cthulhu (Classic)
| |
| Surveillance and Intelligence Gathering | 58-69 | World War Cthulhu: Cold War - Section 46 Operations Manual | CB71971 | 2016 | Cubicle 7 | Call of Cthulhu (Cold War)
| |
| Survival Horror | 18-19 | The Gazebo | 3 | Nov 2012 | Self Published | Call of Cthulhu (Classic)
| |
| Survival of the Fittest | 124-125 | Burning Horizon | WDF23301 | 2011 | WildFire Games | Framewerk (CthulhuTech)
| |
| The Survivor | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Survivors | 15-55 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| Susquehanna Sasquatch! | Sep 2017 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Swallowed by the Sea | Event (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Swamp Bones | 485-514 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Classic)
| |
| Swamp Bones | 23-51 | Opifex Bimonthly | 8 | Jul 1997 | Self Published | Call of Cthulhu (Now)
| |
| Swamp Bones | 1-30 | Swamp Bones | | 1996 | Self Published | Call of Cthulhu (Now)
| |
| Swarm of Cobras | Event (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Swarm of Insects | Event (U) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Swarming | 94-103 | Blood Brothers | CHA2329 | 1990 | Chaosium | Call of Cthulhu (Classic)
| |
| The Swarner Virus | 17 | The Unspeakable Oath | 13 | Jan 1996 | Pagan Publishing | Call of Cthulhu (Now)
| |
| Swaying Branches | Character (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Swearing Fealty to Providence | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Sweet Child of Mine | | Chaosium Digest | v29n05 | Dec 1999 | Chaosium | Call of Cthulhu (Classic)
| |
| Sweet Dreams | 74-75 | Vade Mecum | WDF23001 | 2008 | WildFire Games | Framewerk (CthulhuTech)
| |
| Sweet Dreams Are Made of This | 22-26 | Skeleton Crew | | Oct 1990 | Argus Specialist Publications | Call of Cthulhu (Now)
| |
| Sweet Dreams… | Event (F) | Twilight Horror | CT26 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Sweet Old Lady | Character (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Swift Byakhee | Character (F) | The Mark of Madness | CT66 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Swimming in the Deep | Event (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Swooping Byakhee | Character (F) | The Spoken Covenant | CT36 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Sword of Akmallah | 268-270 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| The Sword of Akmallah | 249-251 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Sword of Ramasekva | Support (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Sword of Sneferu | 29-41 | Worlds of Cthulhu | 5 | Jan 2007 | Pegasus Press | Call of Cthulhu (Classic)
| |
| The Sword of Sneferu | 38-50 | Worlds of Cthulhu | 6 | Jan 2009 | Pegasus Press | Call of Cthulhu (Classic)
| |
| Sword of St. Jerome, The Martyr's Legacy | Support (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sword of Y'ha-talla | Support (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Sword of Y'ha-tallo | Support (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Swords and Arrows | 31-34 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Strange Aeons)
| |
| Sylah-qaulath | | Sylah-qaulath | | May 2021 | Chaosium | Call of Cthulhu (Classic)
| |
| Sylvia | | Tales of Terror (II) | PAG2102 | 1996 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Symbiot Armor | | Chaosium Digest | v38n05 | Jul 2004 | Chaosium | Call of Cthulhu (Strange Aeons: Future)
| |
| Symbiotic Shoggoths | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Symphony of Madness | 74-79 | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder
| |
| Synchronized Watches | 2018 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Syndicate Agent | Character (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Syndicate Intelligence Report | Support (R) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Syndicate Liaison | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Syndicate Liaison | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Syndicate Liaison | Character (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Syndicate Support | Support (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Syndicate Troubleshooter | Character (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Synopsis of the typical 1920 De Profundis campaign | 77-83 | De Profundis | CB71401 | 2010 | Cubicle 7 | De Profundis
| |
| Syringe | Artifact (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| System and Combat | 48-63 | The Laundry | CB71200 | 2010 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| System Stuff | 57-73 | Harlem Unbound | 1 | 2017 | Darker Hue Studios | Call of Cthulhu (Classic)
, Gumshoe
| |
| Szepassony | Feb-2021 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |