| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 Rabat | 15-29 |  Mysteries of Morocco | CHA0306 | 2004 | Chaosium | Call of Cthulhu (Classic)
| |
| Rabat | 15-30 | Secrets of Morocco | CHA23105 | 2008 | Chaosium | Call of Cthulhu (Classic)
| |
 Rabbit's Foot | Support (F) |  The Spawn of the Sleeper | CT19 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Rabid Mice | Monster (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Rabies | Event (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Radar | Artifact (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Radiance of Alsophocus | Spell (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Radiation Suit | Artifact (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Radical Therapy | Event (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Radio Network | Support (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
 Radio Silence | 2014 |  The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Radio Theatre Murder Mystery | |  Radio Theatre Murder Mystery | | Sep 2021 | Chaosium | Call of Cthulhu (Classic)
| |
| RAF Hobwood Stourbridge, West Midlands | 28-29 |  The Black Seal | 2 | Mar 2003 | Brichester University Press | Call of Cthulhu (Now)
| |
| Raggedy Clothes ad Worn Out Shoes: A Look at the American Hobo | 36-41 | The Island of Ignorance | GGP1301 | 2013 | Golden Goblin Press | Call of Cthulhu (Classic)
| |
| The Raid | 4-34 | Rise of the Dead - The Raid | CHA0393 | 2010 | Chaosium | Call of Cthulhu (Now)
| |
| The Raid of Area 51 | | The Raid of Area 51 | | Oct 2019 | Chaosium | | |
| Raid on Black Goat Wood | 1 | Raid on Black Goat Wood | | 2010 | Self Published | None
| |
| Raid! | Event (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Railway Coaches | C:16-17 |  Call of Cthulhu | CHA2009-X | 1981 | Chaosium | Call of Cthulhu (Classic)
| |
| Railway Coaches | B:16-17 | Call of Cthulhu | CHA2301-X | 1983 | Chaosium | Call of Cthulhu (Classic)
| |
| Railway Coaches | 95 |  Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| Railways | 41-42 | Green and Pleasant Land | CHA2320 | 1987 | Chaosium | Call of Cthulhu (Classic)
| |
| Rain of Fish | Event (U) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Rains in April | Event (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| A Rainy British Summer | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Raising of the Great Old Ones | Conspiracy (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
 The Rake | Oct 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Raking the Pot | Event (F) | Journey to Unknown Kadath | CT31 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Rambling Man | Character (U) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ramblings of a Disorganized Mind | 22-24 | Valkyrie | 4 | Dec 1994 | Partizan Press | Call of Cthulhu (Classic)
| |
| Rampaging Chthonian | Character (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rampaging Dark Young | Character (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rampaging Dark Young | Character (F) | Secrets of Arkham | CT32 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
 Ramsey Campbell Horrors Pack 1 | | Ramsey Campbell Horrors Pack 1 | CW-RC1 | 2016 | Petersen Games | Cthulhu Wars
| |
| Ramsey Campbell Horrors Pack 2 | | Ramsey Campbell Horrors Pack 2 | CW-RC2 | 2016 | Petersen Games | Cthulhu Wars
| |
| Randolph Carter | Ally (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Randolph Carter | Character (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Randolph Carter | Ally (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Randolph Carter | Character (F) | Search for the Silver Key | CT29 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Randolph Carter College for Anime-Punk | | Randolph Carter College for Anime-Punk | | Aug 2020 | Chaosium | Call of Cthulhu (Classic)
| |
| The Randolph Pierce Foundation | 52-66 | The Unspeakable Oath | 6 | Aug 1992 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Random Dream Generator | 39-40 |  Serendipity's Circle | 8 | Sum 1996 | Self Published | None
| |
| Ransacked | Event (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Rare and Unusual: Paranormal Artefacts at the British Museum | 50-54 | The Black Seal | 3 | Nov 2003 | Brichester University Press | Call of Cthulhu (Now)
| |
| Rare Antiquities | 1-3 | Rare Antiquities | | 2016 | Self Published | Lovecraftesque
| |
| Rare Book Researcher | Character (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rating the Adventures, Part 1 | |  Chaosium Digest | v22n07 | Nov 1997 | Chaosium | Mythos
| |
| Rating the Adventures, Part 2 | | Chaosium Digest | v22n08 | Nov 1997 | Chaosium | Mythos
| |
| Rating the Adventures, Part 3 | | Chaosium Digest | v22n09 | Nov 1997 | Chaosium | Mythos
| |
| The Rats in the Walls | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Rats in the Walls | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Rats in the Walls | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Rats in the Walls | | The Rats in the Walls | | 2013 | Sphinx Speileverlag | The Rats in the Walls
| |
| Rat-Things | | Ken Writes About Stuff | v2n10 | Dec 2014 | Pelgrane Press | Trail of Cthulhu
| |
| Rat-Things and Worse Horrors | 41-49 | The Arkham Gazette | 3 | Oct 2015 | Sentinel Hill Press | Call of Cthulhu (Classic)
| |
| Ravager from the Deep | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ravager from the Deep | Character (C) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Raven at Birmingham's | 29 | The Unspeakable Oath | 16/17 | Mar 2001 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Ravenar Saga Rediscovered | 83-85 | The Ravenar Sagas | CHA0348 | 2008 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| The Ravenar Sagas | 1-12 | The Ravenar Sagas | CHA0348 | 2008 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Ravening Madness | Spell (R) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Ravenous Hunting Horror | Character (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ravenous Piranhas | Character (F) | Murmurs of Evil | CT35 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ray Stuckey | Ally (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Raymond Legrasse | Ally (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| The Rays of Dawn | Support (F) | Twilight Horror | CT26 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Read or Die | | Read or Die | | May 2020 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Reading on the Road | 587-598 | The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Reading on the Road | 458-468 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Reading the Star Signs | Event (F) | Seekers of Knowledge | CT59 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Real History of Los Angeles | 8-30 | Secrets of Los Angeles | CHA23111 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Real Leeds | | The Real Leeds | | 2017 | Self Published | Arkham Noir
| |
 Real Metal Token Frames | | Real Metal Token Frames | | Sep 2021 | Chaosium | Call of Cthulhu (Classic)
| |
| Real Occult Books for CoC | | Chaosium Digest | v05n10 | Feb 1994 | Chaosium | Call of Cthulhu (Classic)
| |
| Reality Bleeds | 89-93 | License to Summon | CB71205 | 2012 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Reality of the Necronomicon? | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Reallocate | Event (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Realm of Ice and Death | Conspiracy (F) | The Mountains of Madness | CT16 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Realms Beyond Reason | Support (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Realms of the Mythos | 163-198 | Eldritch Skies | BPI7500 | 2012 | Battlefield Press | Unisystem (Eldritch Skies)
| |
| Real-Time Combat | 81-94 | Cthulhu Live: Player's Companion | 0006 | 2000 | Fantasy Flight Games | Call of Cthulhu (Classic)
| |
 The Reanimated | | What Lies Beneath | 1 | Aug 2002 | Self Published | Call of Cthulhu (Classic)
| |
| Reanimator | 16-28 | The Dreaming Prince | CHA0399 | 2011 | Chaosium | Call of Cthulhu (Now)
| |
| The Reanimator | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Reanimator | | Reanimator | | 2018 | Dynamite Entertainment | Reanimator
| |
| The Reaping | Event (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Reasons PCs Leave | May 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Reawakened Elder Thing | Character (F) | The Mountains of Madness | CT16 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Rebooting Campaigns With a Modern Sensibility | 31-32 | Bayt al Azif | 1 | Oct 2018 | Bayt al Azif Inc | Call of Cthulhu (Classic)
| |
| Reborn to Die | 38-62 | Toying With Humans | CHA0317 | 2005 | Chaosium | Call of Cthulhu (Now)
| |
| Recall of Cthulhu | | Recall of Cthulhu | | 2015 | Toy Vault | Recall of Cthulhu
| |
| Reckless Assault | Event (F) | Aspirations of Ascension | CT43 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Reckless Cultist | | Fight or Flight Promos | | 2021 | CMON Limited | Cthulhu: Death May Die
| |
| Reckless Elder Thing | Character (F) | The Cacophony | CT39 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Reclaimed Servant | Character (F) | The Breathing Jungle | CT49 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Recluse | 146-167 | Devil's Swamp | NCG-DS-HC-1 | 2018 | New Comet Games | Call of Cthulhu (Classic)
| |
| Reclusive Researcher | Character (C) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Recommended Reading | 39 | White Dwarf | 72 | Dec 1985 | Games Workshop | Call of Cthulhu (Classic)
| |
| Recovered Icebreaker | Event (F) | Never Night | CT50 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Recovering Sanity | 82 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| Recreation | 66-69 | The London Guidebook | CHA2347 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Recreation | 102-106 | Secrets of San Francisco | CHA23108 | 2006 | Chaosium | Call of Cthulhu (Classic)
| |
| Recruit | Support (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Recruiter for the Lodge | Character (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Recurrence | | Recurrence | | 2019 | Adreama Games | Machina Arcana
| |
| Recurring Nightmares | | Recurring Nightmares | MAD21 | 2016 | Fantasy Flight Games | Mansions of Madness
| |
| Recursive Echoes | | Recursive Echoes | AHB05 | 2020 | Fantasy Flight Games | Arkham Horror
| |
 Red Carpet Affair | 16-17 | Damnation View | WDF23300 | 2009 | WildFire Games | Framewerk (CthulhuTech)
| |
| Red Carpet Ready | 53-61 | Protodimension | 21 | Aut 2014 | Kinstaff Media | Call of Cthulhu (Now)
| |
| Red Desire | Cold Murder | 1-18 | Red Desire | Cold Murder | | 2008 | Self Published | Yellow Dawn
| |
| Red Gate Mound | Support (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Red Heron | Ally (F) | Scooby Doo Set 2 | | Mar 1999 | Self Published | Mythos
| |
| Red Hook | Location (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| The Red House | Sep 2019 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (Now)
| |
| RED MARKET | 2016 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Red Mist | 4-24 | The Red Mist | | 2016 | Pelgrane Press | Gumshoe (Cthulhu Confidential)
| |
| Red Nail Hex | Support (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Red Nun of St Frideswide's Priory | Oct 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Red Rover, Red Rover | | Serendipity's Circle | 17 | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Red Skies | | Red Skies | | Nov 2020 | Chaosium | Call of Cthulhu (WWI)
| |
| The Red Skull Cult | 70-81 | Cultists Under the Bed | CB71206 | 2013 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Red Spill in the Sea | | Red Spill in the Sea | | Apr 2021 | Chaosium | Call of Cthulhu (Gaslight)
| |
| Red Tape | Support (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Red Threshold | Event (F) | Into Tartarus | CT51 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Redacted Rituals | 1-5 | Redacted Rituals | | 2018 | Self Published | Delta Green
| |
| The Red-Gloved Man | Character (F) | Whispers in the Dark | CT34 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Redmalkin - The Demon Cat of Ulthar | Oct 2015 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Reeling Midnight | | New Tales of the Miskatonic Valley | 3009 | 2020 | Stygian Fox | Call of Cthulhu (Classic)
| |
| The Reeling Midnight | 9-27 | New Tales of the Miskatonic Valley | MRP0003 | 2008 | Miskatonic River Press | Call of Cthulhu (Classic)
| |
| Referee | 178-185 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars)
| |
| Reference | 224-261 | Investigator's Handbook | CHA23136 | 2015 | Chaosium | Call of Cthulhu (Classic)
| |
| Reference Material | 82-85 | The London Guidebook | CHA2347 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Reflections of Count Dracula | | PerChance | 5 | May 1991 | Self Published | Call of Cthulhu (Gaslight)
| |
| Reformatted for Yellow Cubes | 2004 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Refractions of Glasston | | Refractions of Glasston | | Dec 2019 | Taylor University Professional Writing | Call of Cthulhu (Classic)
| |
| Refugees From the Sunken Land | | Chaosium Digest | v36n04 | May 2002 | Chaosium | Call of Cthulhu (Classic)
| |
| Regalia of the Outer Gods | Artifact (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Regatta! | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Regeneration | Event (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Regeneration | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Regiment of Dread | 26-41 | Tales of the Miskatonic Valley | CHA2334 | 1991 | Chaosium | Call of Cthulhu (Classic)
| |
| Register of Domestic and Foreign Intelligence Organisations | | Delta Green Plausible Deniability | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Reign of Cthulhu | | Reign of Cthulhu | ZMG71140 | 2016 | Z-Man Games | Pandemic
| |
| The Reins of Power | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Relapse | 90-91 | Burning Horizon | WDF23301 | 2011 | WildFire Games | Framewerk (CthulhuTech)
| |
| A Relaxing Vacation | Adventure (F) | Eric Johnson Mythos Collection | | n/a | Self Published | Mythos
| |
| Relentless Stalker | Character (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Religion and Beliefs of Tibet | 16-33 | Mysteries of Tibet | CHA0351 | 2008 | Chaosium | Call of Cthulhu (Classic)
| |
| Religion in Fantasy Gaming: Religion for Call of Cthulhu PCs | 34-35 | The Adventurer | 7 | Feb 1987 | Mersey Leisure Publishing | Call of Cthulhu (Classic)
| |
| The Relocation of Cottonmouth Springs | Apr 2018 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (WWII)
| |
| Remains to be Seen | 52-82 | Coming Full Circle | PAG1003 | 1995 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Remaking the Hatteras Reef | 73-77 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now)
| |
| Remember the Arizona | 144-145 | Vade Mecum | WDF23001 | 2008 | WildFire Games | Framewerk (CthulhuTech)
| |
| Remember, Remember | 42-52 | The Unspeakable Oath | 22 | Jan 2013 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Remnants | 41-43 | Protodimension | 24 | Jan 2016 | Kinstaff Media | Call of Cthulhu (Gaslight)
| |
| Remortification | | Chaosium Digest | v24n08 | Mar 1998 | Chaosium | Mythos
| |
| Remortification | Spell (R) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Remote * | 2015 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Remote Whateley Farmhouse | Location (C) | Expeditions of Miskatonic University | CAO1301-1 | 1996 | Chaosium | Mythos
| |
| Rend | Character (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Render of Veils | Character (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Render of Veils | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Render of Veils | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Render of Veils | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Render of Veils | Character (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rendezvous in Rama or "Beauty is in the Eye of the Beholder" * | 2018 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Rendezvous with Allen | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Rending Box | 94-112 | The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu
| |
| The Rending Box | 4-26 | The Rending Box | PELGT21 | 2011 | Pelgrane Press | Trail of Cthulhu
| |
| Rending the Veil | Event (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rene Bonvillain | Character (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Renowned Sculptor | Character (F) | The Wailer Below | CT37 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Repairer | Sep 2020 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Repairer of Reputations | Character (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Repairer of Reputations | 4-41 | Out of Space | PELGT30 | 2013 | Pelgrane Press | Trail of Cthulhu
| |
| The Repairer of Reputations | 4-37 | The Repairer of Reputations | PELGT23 | 2011 | Pelgrane Press | Trail of Cthulhu
| |
| Replies on Sanity | | Chaosium Digest | v01n10 | Mar 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| Repo Man | Character (F) | The Antediluvian Dreams | CT21 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Report of Delusions of an Invisible Monster | 23-25 | The Arkham Gazette | 1 | Nov 2013 | Sentinel Hill Press | Call of Cthulhu (Classic)
| |
| Report on Adirondack Cadaver | 19-20 | The Black Seal | 1 | Nov 2001 | Brichester University Press | Call of Cthulhu (Delta Green)
| |
| Report on NYC Burn Victim | 71-72 | The Black Seal | 3 | Nov 2003 | Brichester University Press | Call of Cthulhu (Delta Green)
| |
| Report on Peruvian Mummy | 67-68 | The Black Seal | 2 | Mar 2003 | Brichester University Press | Call of Cthulhu (Delta Green)
| |
| Repossession | D:7-38 | Horror on the Orient Express | CHA23130 | 2014 | Chaosium | Call of Cthulhu (Classic)
| |
| Repossession | D:146-157 | Horror on the Orient Express | CHA2331-X | 1991 | Chaosium | Call of Cthulhu (Classic)
| |
| Reprisal | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Reptile House | 28-30, 32-33 | Games Master International | 15 | Oct 1991 | Newsfield | Call of Cthulhu (Classic)
| |
| Requiem for Shaggai: A History of the Devil's Opera | 16-19 | The Island of Ignorance | GGP1301 | 2013 | Golden Goblin Press | Call of Cthulhu (Classic)
| |
| Requisitions Officer | Character (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Rescue | 158-165 | Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| The Rescue | 38-45 | Cthulhu Companion | CHA2304 | 1983 | Chaosium | Call of Cthulhu (Classic)
| |
| Rescued | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Research | 34-35 | Mysteries of Ireland | CHA0408 | 2012 | Chaosium | Call of Cthulhu (Classic)
| |
| Research & Resources | 18-27 | 1920s Investigator's Companion Vol. I | CHA2343 | 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| Research Assistant | Character (F) | Words of Power | CT54 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Research Assistant Promo Card | | Research Assistant Promo Card | | Aug 2010 | Steve Jackson Games | Munchkin
| |
| Research Expedition | Event (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Research Logs of the Kenning Expedition | 25-45 | Twilight Memoirs | CHA0325 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| The Research of Charles Dexter Ward | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| A Research Project * | 101 | Taint of Madness | CHA2354 | 1995 | Chaosium | Call of Cthulhu (Classic)
| |
| Residue of the Past | | Residue of the Past | | Jan 2021 | Chaosium | Call of Cthulhu (Now)
| |
| Resolution Zero: The United Nations and the Starkweather Moore Conspiracy | 73-86 | The Black Seal | 3 | Nov 2003 | Brichester University Press | Call of Cthulhu (Delta Green)
| |
| Resonance | 181-185 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu
| |
| Resonate | 102-104 | Lovecraftesque | | 2016 | Black Armada | Lovecraftesque
| |
| Resonator Game Mechanics | 126-128 | Delta Green Eyes Only | PAG1013 | 2007 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Resonator Game Mechanics | 59-67 | Delta Green Eyes Only Vol 3: Project Rainbow | PAG2106 | 2000 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Resource Scarcity Tables for Example Post-Apocalypse Game Settings | 309-316 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| Resources | 2-27 | The Realm of Shadows | PAG1006 | 1997 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Resources | 6-38 | Walker in the Wastes | PAG1002 | 1994 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Resources for 1920s Australia | 63-84 | Terror Australis | CHA23155 | 2018 | Chaosium | Call of Cthulhu (Classic)
| |
| Respected New England Doctor/Pragmatic Hobo | Investigator (F) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Ressurection | 91-95 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now)
| |
| Ressurection | Spell (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Rest Stops | 388-397 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now)
| |
| Rest Stops | 4-11 | Opifex Bimonthly | 4 | 1996 | Self Published | Call of Cthulhu (Now)
| |
| Rest Stops | 1-10 | Rest Stops | | 1996 | Self Published | Call of Cthulhu (Now)
| |
| Restitution | | Restitution | | Dec 2020 | Chaosium | Call of Cthulhu (Now)
| |
| Restless and Wary | Event (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Restless and Wary | Event (R) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Restless Caporione | Character (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Restless Dead | Event (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Restless Dead | Character (C) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Restless Dead | Character (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Restless Mi-Go | Character (F) | For the Greater Good | CT64 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Restoration of Evil | 4-22 | Keeper's Screen | CHA2387 | 2000 | Chaosium | Call of Cthulhu (Classic)
| |
| Resurrected Foe | Character (C) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Resurrection Mary | Oct 2005 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Resurrection Men | 115-126 | Kingdom of the Blind | CHA0359 | 2008 | Chaosium | Call of Cthulhu (Classic)
| |
| The Resurrection of Commodore Cook | 2006 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Resurrection Spell: Bringing Back The Dead | | Chaosium Digest | v32n12 | Jan 2001 | Chaosium | Call of Cthulhu (Classic)
| |
 Retired | 00:32 |  Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu
| |
| Retoka | Location (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| The Return of Doctor Moreau * | | The Return of Doctor Moreau | | 2006 | Self Published | Call of Cthulhu (Classic)
| |
| The Return of Doctor Moreau | 32-48 | The Whisperer | 5 | Aut 2003 | Severn Valley Press | Call of Cthulhu (Classic)
| |
| The Return of Old Reliable | 60-84 | Atomic-Age Cthulhu | CHA23122 | 2013 | Chaosium | Call of Cthulhu (Atomic)
| |
| The Return of the Dark Lady | 30-41 | Cerebretron | 3 | Mar 1987 | Self Published | Call of Cthulhu (Dreamlands)
| |
| The Return of the Headless Horseman | 26-33 | Halloween Horror Returns! | CHA0347 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Return of the Hound | | Return of the Hound | | 2006 | ADP Systems | Call of Cthulhu (Classic)
| |
| The Return of the Hounds | 64-124 | The House of R'lyeh | CHA23127 | 2013 | Chaosium | Call of Cthulhu (Classic)
| |
| The Return of the King | 93-113 | Strange Tales of Dread & Wonder #1 | CHA0329 | 2006 | Chaosium | Call of Cthulhu (Strange Aeons: 1960s)
| |
| Return of the King | 2001 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Return of the Magician | 34-44 | Plan 09 From Halloween | CHA0379 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| Return of the Night of the Curse of the Living Dead I | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Return of the Night of the Curse of the Living Dead II | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Return of the Past | | Chaosium Digest | v20n12 | Aug 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| Return of the Ripper | 3-114 | Return of the Ripper | CHA0339 | 2007 | Chaosium | Call of Cthulhu (Gaslight)
| |
| The Return of the Sorcerer | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| Return to Carcosa | Event (F) | Terror in Venice | CT61 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Return to Dunwich | 140-150 | H.P. Lovecraft's Dunwich | CHA8802 | 2002 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to Dunwich | 2-13 | Return to Dunwich | CHA2330 | 1991 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to Earth | 272-281 | The Sense of the Sleight of Hand Man | APU8001 | 2013 | Arc Dream Publishing | Call of Cthulhu (Dreamlands)
| |
| Return to Lake's Camp | 235-243 | Beyond the Mountains of Madness | CHA2380 | 1999 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to Ravenstone Sanitarium | 40-65 | Ravenstone Sanitarium | CHA0350 | 2008 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to Red Hook | 21-39 | Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu
| |
| Return to Red Hook | 23-41 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu
| |
| Return to the Dunwich Legacy | | Return to the Dunwich Legacy | AHC28 | 2018 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Return to the Far Side of the Moon | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| Return to the Forgotten Age | | Return to the Forgotten Age | AHC46 | 2020 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Return to the Monolith | 298-311 | 40 Adventures for Call of Cthulhu | | 2002 | Self Published | Call of Cthulhu (Now)
| |
| Return to the Monolith | 17-32 | Opifex Bimonthly | 12 | Mar 1998 | Self Published | Call of Cthulhu (Now)
| |
| Return to the Monolith | 1-14 | Return to the Monolith | | 1998 | Self Published | Call of Cthulhu (Now)
| |
| Return to the Monolith | | Return to the Monolith | | Mar 2018 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to the Monolith, Part 1 | | Chaosium Digest | v25n02 | Apr 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to the Monolith, Part 2 | | Chaosium Digest | v25n03 | Apr 1998 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to the Night of the Zealot | | Return to the Night of the Zealot | AHC26 | 2018 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Return to the Path of Carcosa | | Return to the Path of Carcosa | AHC36 | 2019 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| Return to Tonga | 115-125 | Utatti Asfet | CHA2360 | 1996 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to Yellow Buck Mountain | 37-48 | The Phantom of Wilson Creek | CHA0404 | 2013 | Chaosium | Call of Cthulhu (Classic)
| |
| Return to Yith | Event (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Reunion | 142-143 | CthulhuTech | WDF23000 | 2007 | WildFire Games | Framewerk (CthulhuTech)
| |
| Reunion | | plateau-of-leng.demon.co.uk | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Reunion | | The Reunion | | Jul 2020 | Chaosium | Call of Cthulhu (Classic)
| |
| The Reunion | Jun 2017 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Now)
| |
| Revealed Cult Secrets Promo Card | | Revealed Cult Secrets Promo Card | | Jun 2016 | Steve Jackson Games | Munchkin
| |
| Revealed of Ra | Support (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Revelation of the Spheres | Event (F) | Spawn of Madness | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Revelation of the Spheres | Event (F) | Spawn of Madness | CT12e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Revelations | 81-88 | Nocturnum: Hollow Winds | CC02 | 1998 | Fantasy Flight Games | Call of Cthulhu (Now)
| |
| Revelations Of Glaaki | Tome (F) | Unlimited | CAO1306-1 | 1997 | Chaosium | Mythos
| |
| Revelations of Hali, Words of the Shepherd's God | Support (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Revenant Characters | 11-26 | Cthulhu Live: Lost Souls | 0005 | 2000 | Fantasy Flight Games | Call of Cthulhu (Classic)
| |
| Revenge of the Hei People | 89-101 | Bride of Halloween Horror | CHA0364 | 2009 | Chaosium | Call of Cthulhu (Now)
| |
| Revenge of the Old Ones | | Revenge of the Old Ones | | 2021 | SchilMil Games | AuZtralia
| |
| Reverberations | 1-10 | Reverberations | | 2017 | Arc Dream Publishing | Delta Green
| |
| Reverend Baxter Lully | Ally (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Reversing the Temporal Flow | Event (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Reversing the Temporal Flow | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Revised Combat Rules | | The Dark Gulf of N'kai | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Revised Sanity Rules | | Chaosium Digest | v34n03 | Jun 2001 | Chaosium | Call of Cthulhu (Classic)
| |
| Revised Skill Set | | Delta Green Plausible Deniability | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Revival | | Nyarlathotep Web Designs | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Revival | 50-62 | The Unspeakable Oath | 12 | Jun 1995 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Revolution | 52-56 | Reign of Terror | CHA23149 | 2017 | Chaosium | Call of Cthulhu (Strange Aeons)
| |
| Revolver | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Rewards for Valor | B:86 | Call of Cthulhu | CHA2009-X | 1981 | Chaosium | Call of Cthulhu (Classic)
| |
| Rewards of Success | B:22 | Call of Cthulhu Starter Set | CHA23158-X | 2018 | Chaosium | Call of Cthulhu (Classic)
| |
| Rhabdaphobia | Event (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Rhan Tegoth | Monster (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Rhan-Tegoth | 1-6 | Rhan-Tegoth | JCG032 | 2019 | Just Crunch Games | The Cthulhu Hack
| |
| Rhan-Tegoth: A New Deity for Call of Cthulhu | 30-31 | Fantasy Gamer | 3 | Dec 1983 | Steve Jackson Games | Call of Cthulhu (Classic)
| |
| Rhoby Harris | Ally (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Rich Man, Poor Man | 1-2 | Rich Man, Poor Man | | 2019 | Beyond Belief Games | Black Books
| |
| Rich Widow | Character (F) | Perilous Trials | CT41 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Richard Bateman | 1998 | delta-green.com | | n/a | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Richard Finchington III | Character (F) | Ancient Horrors | CT17 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Richard Laymon's Amara | Jun 2006 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Richard Lund | Ally (F) | Sesqua Valley | | n/a | Self Published | Mythos
| |
| Richard Pike | Character (F) | Seekers of Knowledge | CT59 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Richard Upton Pickman | Character (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Richard Upton Pickman | Ally (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Richard Upton Pickman | Ally (C) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| Richard Upton Pickman | Character (F) | Sleep of the Dead | CT30 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Richard Upton Pickman, Genius Painter | Character (R) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ridden by Fear | | House of Tindalos | | n/a | Self Published | Mythos
| |
| Riddles | Event (U) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ride a White Horse | 1-1 | Ride a White Horse | | 2016 | Self Published | Lovecraftesque
| |
| The Ride Home | 2005 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Riding Shotgun | Event (F) | Screams from Within | CT38 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Riding the Northbound | | Riding the Northbound | GGP1909 | 2019 | Golden Goblin Press | Call of Cthulhu (Classic)
| |
| Rifles | 62-75 | Investigator Weapons Volume 1: The 1920s and 1930s | 60-IHB01 | 2012 | Sixtystone Press | Call of Cthulhu (Classic)
| |
| Rifles | 93-133 | Investigator Weapons Volume 2: Modern Day | 60-IHB02 | 2015 | Sixtystone Press | Call of Cthulhu (Now)
| |
| The Right Hand Path | Oct 2019 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Right Monster, The Right Adventure | 81-84, 86, 118 | Dragon | 223 | Nov 1995 | TSR | Call of Cthulhu (Classic)
| |
| Rigid Air | 44-55 | Fearful Passages | CHA2335 | 1992 | Chaosium | Call of Cthulhu (Classic)
| |
| Rime of the Ancient Mariner | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| The Ring of Blood Stone | | The Familiar | 4 | Jun 1995 | Self Published | Call of Cthulhu (Classic)
| |
| The Ring of Blood Stone | | Hit Points | 6 | Jan 1992 | National Association for thr Advancement of Role Playing Games | Call of Cthulhu (Classic)
| |
| The Ring of Eibon | | Chaosium Digest | v17n08 | Dec 1996 | Chaosium | Mythos
| |
| Ring of Eibon | Artifact (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Ring of Steel | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| Ring of Temptation | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| A Ring of Toadstools | 117-137 | Halloween Horror 2 | CHA0333 | 2006 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Riot at Red Plank | | Riot at Red Plank | GGP1803 | 2018 | Golden Goblin Press | Call of Cthulhu (Classic)
| |
| The Rip-off | Event (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Ripper | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Ripper | 10 | Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Ripper | 1990 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Risam Vellere | 28-54 | Caligo Accendendum Tournament | CHA0309 | 2004 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Rise of Cthulhu | | Rise of Cthulhu | | 2015 | Self Published | Rise of Cthulhu
| |
| Rise of M'Bakadala, He Who Swims and Eats without Mouth | 99-104 | Secrets of the Congo | CHA0387 | 2010 | Chaosium | Call of Cthulhu (Classic)
| |
| The Rise of R'lyeh | 57-62 | Cthulhu Classics | CHA3301 | 1989 | Chaosium | Call of Cthulhu (Classic)
| |
| The Rise of R'lyeh | 57-62 | Shadows of Yog-Sothoth | CHA2010 | 1982 | Chaosium | Call of Cthulhu (Classic)
| |
| The Rise of R'lyeh | 126-135 | Shadows of Yog-Sothoth | CHA2397 | 2004 | Chaosium | Call of Cthulhu (Classic)
| |
| Rise of the Elders | | Rise of the Elders | | 2017 | Self Published | Rise of the Elders
| |
| Rise of the King | 175-198 | The Curse of Nineveh | CB7355 | 2015 | Cubicle 7 | Call of Cthulhu (Classic)
| |
| Rise of the Old Ones | | Rise of the Old Ones | | 2021 | Japanime Games | Kamigami Battles
| |
| Rise of the Ophidian Empire, Part 1 | | Chaosium Digest | v33n05 | Apr 2001 | Chaosium | Call of Cthulhu (Classic)
| |
| Rise of the Ophidian Empire, Part 2 | | Chaosium Digest | v33n06 | Apr 2001 | Chaosium | Call of Cthulhu (Classic)
| |
| Rise of the Ophidian Empire, Part 3 | | Chaosium Digest | v33n07 | Apr 2001 | Chaosium | Call of Cthulhu (Classic)
| |
| Rise of the Ophidian Empire, Part 4 | | Chaosium Digest | v33n08 | Apr 2001 | Chaosium | Call of Cthulhu (Classic)
| |
| Rise of the Sleeper | 1-28 | Lurking Fears | 0001 | Jan 1990 | Triad Entertainments | Call of Cthulhu (Classic)
| |
| The Rise of Xnaaki | 1-16 | The Unbound Book | 0 | Aug 2002 | Unbound Publishing | Call of Cthulhu (Classic)
| |
| Rising from the Stars | | Rising from the Stars | | Nov 2020 | Chaosium | Call of Cthulhu (Classic)
| |
| A Rising Storm | 281 | CthulhuTech | WDF23000 | 2007 | WildFire Games | Framewerk (CthulhuTech)
| |
| The Rising Tide | 42-45 | Interface 19.40 | MUH050027AC | 2015 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Interface Zero
, Savage Worlds (Achtung!)
| |
| The Rite of Goff'nn Hupadgh | 55-99 | Opifex Bimonthly | 21 | Sep 1999 | Self Published | Call of Cthulhu (Classic)
| |
| Rite of Passage | Event (R) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rite of Rebirth | Support (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rite of the Broken Stone | Event (C) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rite of the Broken Stone | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rite of the Broken Stone | Event (F) | Arkham Edition Premium Starter Set | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rite of the Chosen One | Event (U) | Unspeakable Tales | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rite of the Silver Gate | Support (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Rite of the Silver Key | Support (F) | The Key and the Gate | CT60 | 2013 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Rites of Cthulhu | | Rites of Cthulhu | | 2018 | Quirky Engine Entertainment | Rites of Cthulhu
| |
| Rites of Luveh Keraph | Support (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Ritual Conspiracy | Conspiracy (F) | Conspiracies of Chaos | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Ritual Conspiracy | Conspiracy (F) | Conspiracies of Chaos | CT14e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual Curses | 4 | Fragments of Fear | CHA2310 | 1985 | Chaosium | Call of Cthulhu (Classic)
| |
| Ritual Initiation | Event (F) | In the Dread of Night | CT28 | 2009 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of Bellephar | Event (F) | Into Tartarus | CT51 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of Exclusion | Support (F) | The Unspeakable Pages | CT57 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of Expulsion | Support (F) | The Thousand Young | CT65 | 2015 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of Inferno | Support (F) | That Which Consumes | CT45 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of Power | Support (F) | Initiations of the Favored | CT42 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of Summoning | Support (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of the Construct | Support (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual of the Lance | Support (F) | The Order of the Silver Twilight | CT33 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Ritual Pursuits | 3-5 | Ritual Pursuits | | 2011 | Pelgrane Press | Trail of Cthulhu
| |
| Ritual Sacrifice | Event (R) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rituals of the Deep Ones | 1-5 | Rituals of the Deep Ones | | 2015 | Necromancers of the Northwest | Pathfinder
| |
| Rituals, Rites and Ceremonies: All Hail the Dark Ones | 21-25 | Dark Mirror | CHA0338 | 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| The Rival Congo Expeditions | 9-22 | Secrets of the Congo | CHA0387 | 2010 | Chaosium | Call of Cthulhu (Classic)
| |
| River of Serpents | Support (F) | Screams from Within | CT38 | 2010 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| River of Tears | 81-112 | Our Ladies of Sorrow | MRP0005 | 2009 | Miskatonic River Press | Call of Cthulhu (Now)
| |
| Rlim Shaikorth | | Dagon | 5 | Jan 1985 | Self Published | Call of Cthulhu (Classic)
| |
| R'lyeh | Location (U) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| The R'lyeh Conspiracy | Conspiracy (F) | Conspiracies of Chaos | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The R'lyeh Conspiracy | Conspiracy (F) | Conspiracies of Chaos | CT14e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| R'lyeh Disk Left Fragment | Artifact (U) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| R'lyeh Disk Right Fragment | Artifact (U) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| R'lyeh Disk Top Fragment | Artifact (U) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| R'lyeh Rising | | R'lyeh Rising | DMD-KS05 | 2019 | CMON Limited | Cthulhu: Death May Die
| |
| R'lyeh Rising - Cthulhu Risen | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| R'lyeh Rising - Spectral Hunters | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| R'lyeh Rising - The Silver Twilight Lodge | Adventure (F) | House of Tindalos | | n/a | Self Published | Mythos
| |
| R'lyeh Text (Atlantean) | Tome (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| R'lyeh Text (Chinese) | Tome (R) | Legends of the Necronomicon | CAO1303-1 | 1996 | Chaosium | Mythos
| |
| R'lyeh Text, The Breath of Dagon | Support (R) | Masks of Nyarlathotep | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| R'lyeh, City of Dreams | Support (U) | Arkham Edition | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The R'lyehan Palimpsests | | Chaosium Digest | v12n10 | Jan 1996 | Chaosium | None
| |
| Road Kill | 40-48 | The Unspeakable Oath | 12 | Jun 1995 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| A Road Less Travelled | 13-26 | The Black Seal | 3 | Nov 2003 | Brichester University Press | Call of Cthulhu (Now)
| |
| Road Rage | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Road to Hali | 46-57 | Crypt of Cthulhu | 89 | 1995 | Necronomicon Press | Call of Cthulhu (Classic)
| |
| The Road to Hali | 18-30 | The Unspeakable Oath | 1 | Dec 1990 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Road Unraveled | | The Road Unraveled | | Apr 2020 | Chaosium | Call of Cthulhu (Now)
| |
| Roadkill | | Tales of Terror (I) | | 1990 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Roadkill | 34 | Tales of Terror (III) | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Roadkill | 1990 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Roadside Assistance | | More Tales of Terror | PAG2105 | 2000 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Roald Ellsworth | Character (F) | Seekers of Knowledge | CT59 | 2012 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Roar in the Dark | | The Roar in the Dark | | Sep 2021 | Chaosium | Call of Cthulhu (Strange Aeons: Ancient China)
| |
| The Roaring Twenties | 5-14 | The 1920s Investigator's Companion | CHA2370 | 1997 | Chaosium | Call of Cthulhu (Classic)
| |
| The Roaring Twenties | 8-17 | 1920s Investigator's Companion Vol. I | CHA2343 | 1993 | Chaosium | Call of Cthulhu (Classic)
| |
| The Roaring Twenties | 160-207 | Investigator's Handbook | CHA23136 | 2015 | Chaosium | Call of Cthulhu (Classic)
| |
| Rob MacIntyre, Adventurous Brewmaster | 1 | Tuesday Terribles | 6 | Oct 2007 | Chaosium | Call of Cthulhu (Classic)
| |
| Robert Blake's Study | Location (C) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Robert Bloch | Ally (U) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Robert Friendly | Character (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Robert Harrison Blake | Ally (R) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Robert Marsh | Ally (U) | Limited | CAO1300-1 | 1996 | Chaosium | Mythos
| |
| Robert W. Chambers | Ally (C) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| Robinson Gruesome | 33-45 | Monophobia | 1001 | 2010 | Unbound Publishing | Call of Cthulhu (Classic)
| |
| Rocco | | Fight or Flight Promos | | 2021 | CMON Limited | Cthulhu: Death May Die
| |
| Rocker excerpt | Feb 1997 | rpg.net | | n/a | Self Published | Call of Cthulhu (Cyberpunk)
| |
| Rocket Launchers | 181-184 | Investigator Weapons Volume 2: Modern Day | 60-IHB02 | 2015 | Sixtystone Press | Call of Cthulhu (Now)
| |
| Rod Serling | Ally (F) | Seattle | | n/a | Self Published | Mythos
| |
| Roland Banks Promo Cards | | The Dirge of Reason | NAH11 | 2018 | Fantasy Flight Games | Arkham Horror: The Card Game
| |
| The Role of Prohibition | 5 | King of Chicago | CHA2348 | 1994 | Chaosium | Call of Cthulhu (Classic)
| |
| Role of Religion | 11-12 | Dark Crusades | CHA0414 | 2013 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Roleplaying | 5-34 | Cthulhu Live: Player's Companion | 0006 | 2000 | Fantasy Flight Games | Call of Cthulhu (Classic)
| |
| Roleplaying | 35-70 | Secrets of Japan | CHA2392 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| Roleplaying in the Fate | 97-99 | Delta Green Eyes Only | PAG1013 | 2007 | Pagan Publishing | Call of Cthulhu (Delta Green)
| |
| Roleplaying, Hoaxes and You | 18-22 | White Wolf | 48 | Oct 1994 | White Wolf Games | Call of Cthulhu (Classic)
| |
| Roll the Dice | Event (F) | Denizens of the Underworld | CT62 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Rollers | Dec 2017 | Reckoning of the Dead | | n/a | Self Published | Call of Cthulhu (Atomic)
| |
| Roman Castevet | Ally (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| The Roman Legions | 107-114 | The 7th Edition Guide to Cthulhu Invictus | GGP1801 | 2018 | Golden Goblin Press | Call of Cthulhu (Invictus)
| |
| The Roman Legions | 145-147 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| Roman Polanski | Ally (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Roman Provinces | 115-128 | The 7th Edition Guide to Cthulhu Invictus | GGP1801 | 2018 | Golden Goblin Press | Call of Cthulhu (Invictus)
| |
| Roman Siege Weapons | 89-90 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic)
| |
| Roman Slang | 4-5 | Lux in Tenebras | MRP0006 | 2011 | Miskatonic River Press | Call of Cthulhu (Invictus)
| |
| The Romanian Contract | | The Romanian Contract | | May 2021 | Chaosium | Call of Cthulhu (Now)
| |
| The Roof of the Bradford | Event (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| The Roof of the World | 101-134 | Shadows of Atlantis | MUH01022CS | 2015 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| The Room Beyond | 64-79 | The Golden Dawn | PAG1004 | 1996 | Pagan Publishing | Call of Cthulhu (Gaslight)
| |
| Room for One Less | 9-21 | Serendipity's Circle | 8 | Sum 1996 | Self Published | Call of Cthulhu (Now)
, Chill
, Lost Souls
, Nephilim
, Shattered Dreams
, The Whispering Vault
| |
| The Room with No Doors | | The Room with No Doors | | Dec 2020 | Chaosium | Call of Cthulhu (Classic)
| |
| Roots | 57-84 | The Things We Leave Behind | TTWLB | 2016 | Stygian Fox | Call of Cthulhu (Now)
| |
| Rope & Anchor Tavern | Location (U) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Rope And The Anchor Tavern | Support (F) | Kingsport Dreams | | 2006 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| The Rope And The Anchor Tavern | Support (F) | Kingsport Dreams | CT13e | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| Rosemary Woodhouse | Ally (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| Rosemary's Baby | Monster (F) | Rosemary's Baby | | n/a | Self Published | Mythos
| |
| The Rosewood Box | 2007 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| The Rosicrucians | 12-15 | Different Worlds | 38 | Jan 1985 | Chaosium | Call of Cthulhu (Classic)
| |
| Ross Island | Location (F) | Antarctica | | n/a | Self Published | Mythos
| |
| Rotten Factory | 21-22 | Protodimension | 4 | Spr 2010 | Kinstaff Media | Call of Cthulhu (Now)
| |
| Rotting Away | Story (F) | Call of Cthulhu The Card Game | CT18 | 2008 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| A Rough Guide to the 23rd Century | 16-20 | Cthulhu Rising | CHA0311 | 2005 | Chaosium | Call of Cthulhu (Rising)
| |
| A Rough Guide to the Dreamlands | 4-5 | The Whisperer | 4 | Spr 2001 | Severn Valley Press | Call of Cthulhu (Dreamlands)
| |
| Round Tower | Location (F) | Seattle | | n/a | Self Published | Mythos
| |
| Route 666: Three Strikes You're Out | | Route 666: Three Strikes You're Out | | Apr 2021 | Chaosium | Call of Cthulhu (Atomic)
| |
| A Routine Audit | 2020 | The Fairfield Project | | n/a | Self Published | Call of Cthulhu (Delta Green)
| |
| The Routine Autopsy | Apr 1995 | hyperwerx.net | | n/a | Self Published | Call of Cthulhu (Now)
| |
| The Royal Geographic Society | | Robo's Mythos CCG Web Page | | n/a | Self Published | Mythos
| |
| The Royal Geographical Society | Adventure (U) | Cthulhu Rising | CAO1302-1 | 1996 | Chaosium | Mythos
| |
| The Royal Geographical Society Deck | | Chaosium Digest | v21n04 | Aug 1997 | Chaosium | Mythos
| |
| RPG Cultural Appropriation | 42-45 | RPG Review | 17 | Sep 2012 | Self Published | Call of Cthulhu (Classic)
| |
| Rubbed Out | Event (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rude Awakening | Event (R) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Rue D'Auseil | Location (R) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Rue de reve | 104-125 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu
| |
| The Rug | 2004 | talesofterror.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Ruined Top-Secret Warehouse | Location (C) | New Aeon | CAO1311-1 | 1997 | Chaosium | Mythos
| |
| Ruinous Star Spawn | Character (F) | The Sleeper Below | CT63 | 2014 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Ruins of Ib | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| The Ruins of Sarnath | Location (C) | Dreamlands | CAO1307-1 | 1997 | Chaosium | Mythos
| |
| Rules | 74-79 | Chthonian Stars | WDF25020 | 2011 | WildFire Games | Traveller (Chthonian Stars)
| |
| The Rules | 79-80 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu
| |
| The Rules | 11-13 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu
| |
| Rules and Flavour | 120-141 | Zortiander Inc. Catalogue | | n/a | Self Published | Framewerk (CthulhuTech)
| |
| Rules and Gear | 99-142 | Eldritch Skies | BPI7500 | 2012 | Battlefield Press | Unisystem (Eldritch Skies)
| |
| Rules and Skills | 51-74 | Call of Cthulhu | CHA23106 | 2005 | Chaosium | Call of Cthulhu (Classic)
| |
| Rules and Skills | 48-67 | Call of Cthulhu | CHA2386 | 1999 | Chaosium | Call of Cthulhu (Classic)
| |
| The Rules Files: Travel Between Regions | | Chaosium Digest | v16n12 | Oct 1996 | Chaosium | Mythos
| |
| Rules for Equipment and Vehicles | 104-108 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | d100 (APOCTHULHU)
| |
| Rules of Play | 14-54 | Lovecraftesque | | 2016 | Black Armada | Lovecraftesque
| |
| The Rules of Savage Engagement | 171-183 | Keeper's Guide to the Secret War | MPS01032CS | 2013 | Modiphius Entertainment | Call of Cthulhu (Achtung!)
, Savage Worlds (Achtung!)
| |
| Rules of the Steam-Powered Age | 8-13 | Queensguard | CHA0382 | 2009 | Chaosium | Call of Cthulhu (Steampunk)
| |
| Rulesbook Additions | 137-145 | Call of Cthulhu | CHA2317-H | 1986 | Chaosium | Call of Cthulhu (Classic)
| |
| Rum Runner | Character (U) | Forbidden Relics | | 2004 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ruminations | 03:08 | Four Shadows | PELGT05 | 2008 | Pelgrane Press | Trail of Cthulhu
| |
| Rumormill | Event (F) | That Which Consumes | CT45 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Run Away Part 1: Alexandria | Sep 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Invictus)
| |
| The Run Away Part 2: The Oasis of Ket-Septi | Sep 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Invictus)
| |
| Run for it! | 62-63 | Bayt al Azif | 1 | Oct 2018 | Bayt al Azif Inc | Call of Cthulhu (Classic)
| |
| Run! | 01:58 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu
| |
| Runaways | Feb 2000 | Runaways | | n/a | Self Published | Call of Cthulhu (Now)
| |
| Rune Mysteries Revealed | 54-55, 57-58 | Pyramid | 11 | Jan 1994 | Steve Jackson Games | None
| |
| Rune Mysteries Revealed Again! | 80-81, 83 | Pyramid | 13 | May 1995 | Steve Jackson Games | None
| |
| Running a Parapsychological Campaign | 61-68 | Parapsycologist's Handbook | CHA0085 | 2003 | Chaosium | Call of Cthulhu (Classic)
, Call of Cthulhu (Gaslight)
, Call of Cthulhu (Now)
| |
| Running a Poltergeist Scenario | 76-82 | Parapsycologist's Handbook | CHA0085 | 2003 | Chaosium | Call of Cthulhu (Classic)
, Call of Cthulhu (Gaslight)
, Call of Cthulhu (Now)
| |
| Running Dark Crusades | 13-16 | Dark Crusades | CHA0414 | 2013 | Chaosium | Call of Cthulhu (Dark Ages)
| |
| Running Delta Green | 312-316 | Delta Green: Targets of Opportunity | PAG2108 | 2010 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| The Running Man | 75-80 | Green and Pleasant Land | CHA2320 | 1987 | Chaosium | Call of Cthulhu (Classic)
| |
| Running Military Games | 46-48 | As Above, So Below | CB71209 | 2015 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Running Political Games | 71-75 | As Above, So Below | CB71209 | 2015 | Cubicle 7 | Call of Cthulhu (Laundry)
| |
| Running Pulp Games | 90-98 | Pulp Cthulhu | CHA23107 | 2016 | Chaosium | Call of Cthulhu (Classic)
| |
| Running the Game | 69-82 | Cthulhu Live | SKP0602 | 2006 | Skirmisher Publishing | Call of Cthulhu (Classic)
| |
| Rusalka | Oct 2014 | shoggoth.net | | n/a | Self Published | Call of Cthulhu (Classic)
| |
| Rush to Judgement | Event (U) | Forgotten Cities | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Rush Week | Event (F) | Aspirations of Ascension | CT43 | 2011 | Fantasy Flight Games | Call of Cthulhu LCG
| |
| The Russian Civil War | 6-7 | The Unspeakable Oath | 7 | Jan 1993 | Pagan Publishing | Call of Cthulhu (Classic)
| |
| Rusty Cold | | Rusty Cold | | Apr 2021 | Chaosium | Call of Cthulhu (Strange Aeons)
| |
| Ruthless Fanatic | Character (C) | Eldritch Edition | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ruthless Fanatic | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |
| Ruthless Fanatic | Character (F) | Eldritch Edition Premium Starter Set | | 2005 | Fantasy Flight Games | Call of Cthulhu CCG
| |