| Title | Code | Date | Publisher | System (Setting) |
|---|
 Alarms and Journeys | 2 | Sep 2019 | Dave Johnson Games | Trail of Cthulhu |
| Alarms and Journeys | 4 | Spr 2020 | Dave Johnson Games | Trail of Cthulhu |
| Alarums and Excursions | 429 | Jul 2011 | Self Published | Trail of Cthulhu |
| Alarums and Excursions | 486 | Apr 2016 | Self Published | Trail of Cthulhu |
| Alarums and Excursions | 488 | Jun 2016 | Self Published | Trail of Cthulhu |
| Alarums and Excursions | 491 | Sep 2016 | Self Published | Trail of Cthulhu |
| Alarums and Excursions | 493 | Nov 2016 | Self Published | Trail of Cthulhu |
| Alarums and Excursions | 506 | Dec 2017 | Self Published | Trail of Cthulhu |
| Alarums and Excursions | 507 | Jan 2018 | Self Published | Trail of Cthulhu |
 The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu |
 Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu |
| Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu |
| The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu |
| Bayt al Azif | 4 | Jan 2022 | Bayt al Azif Inc | Call of Cthulhu (Classic), Call of Cthulhu (Now), Trail of Cthulhu |
| Between Heart Beats | | Nov 2023 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Delta Green, Cthulhu Dark |
| The Big Hoodoo | PELGT18 | 2011 | Pelgrane Press | Trail of Cthulhu |
| The Black Drop | PELGT13 | 2010 | Pelgrane Press | Trail of Cthulhu |
| The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu |
| The Book of the New Jerusalem * | PELGT46 | 2021 | Pelgrane Press | Trail of Cthulhu |
| The Book of the Smoke * | PELGT20 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu |
 Bookhounds of London Limited Edition Package * | | 2011 | Pelgrane Press | Trail of Cthulhu |
| Castle Bravo | PELGT12 | 2010 | Pelgrane Press | Trail of Cthulhu |
| Chat-DMT | | Mar 2024 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Delta Green, Cthulhu Dark |
| Condensed Rules for Trail of Cthulhu | | 2014 | Pelgrane Press | Trail of Cthulhu |
| Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu |
| Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu |
| The Dance in the Blood | PELGT14 | 2010 | Pelgrane Press | Trail of Cthulhu |
 The Dark Times | 1 | Aut 2017 | Self Published | Dark Conspiracy, Trail of Cthulhu, Call of Cthulhu (Delta Green), Call of Cthulhu (Now) |
| The Dark Times | 2 | Jan 2018 | Self Published | None, Trail of Cthulhu, Call of Cthulhu (Classic) |
| The Dark Times | 4 | Feb 2019 | Self Published | Trail of Cthulhu |
| The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Diaspora | | Jan 2024 | Xipe Totec Press | Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Delta Green, Cthulhu Dark |
| The Dinner Guests | | 2015 | Self Published | Trail of Cthulhu |
| Disaster at Monongah Mining Company | | 2015 | Self Published | Trail of Cthulhu |
| DotDotAsh | | Apr 2024 | Xipe Totec Press | Trail of Cthulhu, Delta Green, Cthulhu Dark, Call of Cthulhu (Now) |
| Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu |
| Dreams in the Deep | | 2015 | Self Published | Trail of Cthulhu |
| Dulce Et Decorun Est | PELGT32 | 2014 | Pelgrane Press | Trail of Cthulhu |
| The Dying of St Margaret's | PELGT07 | 2009 | Pelgrane Press | Trail of Cthulhu |
| Endless Spinning | | Dec 2023 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Trail of Cthulhu, Delta Green |
| Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu |
 Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu |
 Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu |
| The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu |
| Flying Coffins | PELGT27 | 2012 | Pelgrane Press | Trail of Cthulhu |
| Four Shadows * | PELGT05 | 2008 | Pelgrane Press | Trail of Cthulhu |
| Freshly Turned Earth | | Dec 2023 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Trail of Cthulhu, Delta Green |
| The Gatherer of Nightmares | | 2015 | Self Published | Trail of Cthulhu |
| The God Of Prosthetics | | Nov 2023 | Xipe Totec Press | Trail of Cthulhu, Delta Green, Cthulhu Dark, Call of Cthulhu (Now), Fear Itself |
| Harlem Unbound * | 1 | 2017 | Darker Hue Studios | Cthulhu Confidential, Call of Cthulhu (Classic), Trail of Cthulhu |
| The Haunted House Conversion Notes | | 2008 | Self Published | Trail of Cthulhu |
| Hell Fire | PELGT26 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Hideous Creatures | PELGT47 | 2019 | Pelgrane Press | Trail of Cthulhu |
| Holy Abominable | | Oct 2023 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Delta Green |
| The Horror of the Glen Conversion Notes | | 2008 | Self Published | Trail of Cthulhu |
| Incommers | | 2016 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Trail of Cthulhu, Delta Green |
| Inhuman Trafficking | | Sep 2023 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Cthulhu Obscura, Trail of Cthulhu, Delta Green |
| Intersections | | 2016 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Trail of Cthulhu, Delta Green |
| Invasive Procedures | PELG09 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Investigator Passports | | 2019 | base113 Games | Call of Cthulhu (Classic), Trail of Cthulhu |
| Judge, Jury, and | | Jan 2024 | Xipe Totec Press | Delta Green, Cthulhu Dark, Call of Cthulhu (Now), Trail of Cthulhu |
| Keeper's Resource Book and Screen | PELGT04 | 2008 | Pelgrane Press | Trail of Cthulhu |
| The Keepers of the Woods | | 2015 | Self Published | Trail of Cthulhu |
| The Keepers of the Woods * | | 2016 | Self Published | Trail of Cthulhu |
| Ken Writes About Stuff | v1Bonus | Apr 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n1 | Mar 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n10 | Jan 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n11 | Feb 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n12 | Mar 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n2 | Apr 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n3 | May 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n4 | Jul 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n5 | Sep 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n6 | Sep 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n7 | Oct 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n8 | Nov 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v1n9 | Dec 2013 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2Bonus | Feb 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n1 | Apr 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n10 | Dec 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n11 | Jan 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n12 | Feb 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n2 | May 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n3 | Jun 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n4 | Jun 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n6 | Aug 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v2n8 | Oct 2014 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3Bonus | Mar 2016 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n1 | Mar 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n10 | Jan 2016 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n11 | Feb 2016 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n12 | Mar 2016 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n2 | Apr 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n3 | May 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n5 | Jul 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n6 | Aug 2015 | Pelgrane Press | Trail of Cthulhu |
| Ken Writes About Stuff | v3n9 | Nov 2015 | Pelgrane Press | Trail of Cthulhu |
| Le Livre Des Fourmis * | PELGT39 | 2014 | Pelgrane Press | Trail of Cthulhu |
| The Light in Their Eyes | | Nov 2024 | Xipe Totec Press | Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Delta Green, Cthulhu Dark |
| The Locksmith | | 2015 | Self Published | Trail of Cthulhu |
| London on the Shores of Lake Hali | | 2015 | Self Published | Trail of Cthulhu |
| The Long Con | PELGT41 | 2016 | Pelgrane Press | Trail of Cthulhu |
| Looking Glass: Hong Kong | PELGN13 | 2017 | Pelgrane Press | Trail of Cthulhu |
| The Many Deaths of Edward Bigsby | PELGT42 | 2016 | Pelgrane Press | Trail of Cthulhu |
| The Many Deaths of Edward Bigsby | | 2014 | Innsmouth House Press | Trail of Cthulhu |
| Many Fires | PELGT25 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Masks of Nyarlathotep Conversion Notes | | 2008 | Self Published | Trail of Cthulhu |
| The Murderer of Thomas Fell | | 2008 | Pelgrane Press | Trail of Cthulhu |
| Mutable Deceptions Vol 1: Jazz Age Newspapers | cr7001 | 2013 | Cthulhu Reborn | Call of Cthulhu (Classic), Trail of Cthulhu |
| Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu |
| Mythos in Medias Res | | 2016 | Xipe Totec Press | Delta Green, Cthulhu Confidential, Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark |
| Mythosophobia | | 2016 | Xipe Totec Press | Cthulhu Confidential, Trail of Cthulhu, Call of Cthulhu (Now), Delta Green |
| Mythoturbation | | 2016 | Xipe Totec Press | Trail of Cthulhu, Delta Green, Cthulhu Dark, Call of Cthulhu (Now) |
| New Clear Semiotics | | 2016 | Xipe Totec Press | Trail of Cthulhu, Delta Green, Cthulhu Dark, Call of Cthulhu (Now) |
| Not So Quiet | PELGT15 | 2010 | Pelgrane Press | Trail of Cthulhu |
| Old Ones Rising * | | 2017 | Arc Dream Publishing | Call of Cthulhu (Gaslight), Call of Cthulhu (Delta Green), Call of Cthulhu (Now), Trail of Cthulhu, Call of Cthulhu (Atomic), Cthulhu Dark, Call of Cthulhu (Classic), Call of Cthulhu (Strange Aeons) [1975], Fiasco |
| An Oneiric Resistance | | 2016 | Xipe Totec Press | Delta Green, Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Confidential, Cthulhu Dark |
| Out of Space | PELGT30 | 2013 | Pelgrane Press | Trail of Cthulhu |
| Out of the Woods | PELGT43 | 2017 | Pelgrane Press | Trail of Cthulhu |
| Out of Time | PELGT22 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Performance Peace | | Mar 2024 | Xipe Totec Press | Delta Green, Cthulhu Dark, Call of Cthulhu (Now), Trail of Cthulhu |
| Petruska's Assumption | | 2016 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark, Delta Green, Fear Itself |
| Plans from the XXth century | 3001b | 2010 | Three Fourteen Games | Call of Cthulhu (Now), Trail of Cthulhu, Call of Cthulhu (Classic) |
| Player's Guide * | PELGT03 | 2007 | Pelgrane Press | Trail of Cthulhu |
| Preacher-Man | | 2013 | Arcane Footpad | Trail of Cthulhu, Savage Worlds (Realms of Cthulhu), Call of Cthulhu (Classic) |
| The Purist Adventures * | PELGB4 | 2010 | Pelgrane Press | Trail of Cthulhu |
| The Rap Sheet | 1 | May 2009 | Pelgrane Press | Trail of Cthulhu |
| The Rap Sheet | 2 | May 2009 | Pelgrane Press | Trail of Cthulhu |
| The Rap Sheet | 3 | Aug 2009 | Pelgrane Press | Trail of Cthulhu |
| The Read Through | | Dec 2023 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Cthulhu Obscura, Trail of Cthulhu, Delta Green |
| Recoil/Recall | | Dec 2024 | Xipe Totec Press | Delta Green, Cthulhu Dark, Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu |
| The Rending Box | PELGT21 | 2011 | Pelgrane Press | Trail of Cthulhu |
| The Repairer of Reputations | PELGT23 | 2011 | Pelgrane Press | Trail of Cthulhu |
| Ritual Pursuits * | | 2011 | Pelgrane Press | Trail of Cthulhu |
| RMS Titanic: The Millionaire's Special | PELGT28 | 2012 | Pelgrane Press | Trail of Cthulhu |
| Rough Magicks | PELGT09 | 2009 | Pelgrane Press | Trail of Cthulhu |
| RPG Review | 7 | Mar 2009 | Self Published | Call of Cthulhu (Delta Green), Chill, Vampyre the Masquerade, Call of Cthulhu (Classic), Advanced Dungeons and Dragons (Ravenloft), Trail of Cthulhu, Kult, GURPS, Little Fears |
| The Saga of Gaukur Trandilsson | | Oct 2023 | Xipe Totec Press | Trail of Cthulhu, Delta Green, Call of Cthulhu (Now), Cthulhu Dark, Call of Cthulhu (Dark Ages) |
| Saigon: 1968 | PELGDG03D | 2021 | Pelgrane Press | Trail of Cthulhu |
| Secrets of Salem: The Milk of Shub-Niggurath | 7 | 2020 | The Ghoul's Notes | Trail of Cthulhu |
| Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu |
| Sisters Of Sorrow | PELGT29 | 2012 | Pelgrane Press | Trail of Cthulhu |
| Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu |
| Soldiers of Pen and Ink | PELGT36 | 2014 | Pelgrane Press | Trail of Cthulhu |
| Stained Glass | | 2016 | Xipe Totec Press | Fear Itself, Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu |
| Stochastic Sparaogmos | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu, Fear Itself |
| Stunning Eldritch Tales | PELGT02 | 2008 | Pelgrane Press | Trail of Cthulhu |
| Summon/Bind | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) |
| Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu |
| Trail of Cthulhu Quickstart Rules | PELGT201QS | Oct 2024 | Pelgrane Press | Trail of Cthulhu |
| Trail of Cthulhu: Player's Guide | PELGT03D | 2007 | Pelgrane Press | Trail of Cthulhu |
| The Transition of Ludvig Prinn | | 2015 | Self Published | Trail of Cthulhu |
| Trouble With the Piping | | Aug 2023 | Xipe Totec Press | Trail of Cthulhu, Delta Green, Cthulhu Dark, Call of Cthulhu (Now), Fear Itself |
| Ulthar: No Man May Kill a Cat | | Oct 2023 | Xipe Totec Press | Call of Cthulhu (Dreamlands), Cthulhu Obscura, Trail of Cthulhu, Delta Green, Cthulhu Dark |
| Unmasked Rally | | 2016 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark, Delta Green |
| The Watchers in the Sky | PELGT11 | 2010 | Pelgrane Press | Trail of Cthulhu |
| Whispers of Harlem | DHSP2 | 2018 | Darker Hue Studios | Trail of Cthulhu, Call of Cthulhu (Classic) |
| The Wonder at Mercury | | 2016 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Delta Green, Cthulhu Dark |
| Zero Point, Part 1 - Three Kings | MPS01011T | 2013 | Modiphius Entertainment | Trail of Cthulhu |
| Zero Point, Part 2 - Heroes of the Sea | MPS01012T | 2013 | Modiphius Entertainment | Trail of Cthulhu |
| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 1930s England | 109-124 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | |
 ??? | | Alarms and Journeys | 2 | Sep 2019 | Dave Johnson Games | Trail of Cthulhu | |
| ??? | | Alarms and Journeys | 4 | Spr 2020 | Dave Johnson Games | Trail of Cthulhu | |
| ??? | | Alarums and Excursions | 429 | Jul 2011 | Self Published | Trail of Cthulhu | |
| ??? | | Alarums and Excursions | 486 | Apr 2016 | Self Published | Trail of Cthulhu | |
| ??? | | Alarums and Excursions | 488 | Jun 2016 | Self Published | Trail of Cthulhu | |
| ??? | | Alarums and Excursions | 491 | Sep 2016 | Self Published | Trail of Cthulhu | |
| ??? | | Alarums and Excursions | 493 | Nov 2016 | Self Published | Trail of Cthulhu | |
| ??? | | Alarums and Excursions | 506 | Dec 2017 | Self Published | Trail of Cthulhu | |
| ??? | | Alarums and Excursions | 507 | Jan 2018 | Self Published | Trail of Cthulhu | |
 Act One | 43-50 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | 1930s |
| Act Two | 121-144 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | 1930s |
 Action, Reaction | 1 | The Rap Sheet | 2 | May 2009 | Pelgrane Press | Trail of Cthulhu | |
| The Afflicted | 45-51 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| The Afflicted | 46-52 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Alchemy | | Ken Writes About Stuff | v3n10 | Jan 2016 | Pelgrane Press | Trail of Cthulhu | |
 Anagnorisis | 03:14 | Four Shadows | PELGT05 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Apocalypse | 373-388 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Earth; 1930s |
| The Apocalypse Machine | 6-7 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| The Apocalypse Machine | 8-10 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Art of Magic | 57-92 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| The Axe of Gaukur Trandilsson | 7-13 | The Saga of Gaukur Trandilsson | | Oct 2023 | Xipe Totec Press | Delta Green, Call of Cthulhu (Dark Ages), Trail of Cthulhu, Cthulhu Dark | Norway; 1000 |
| Backlot Gothic | 11-26 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Bangkok | 04:01 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Bangkok | 145-182 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Thailand; 1930s |
| Bast | | Ken Writes About Stuff | v3n11 | Feb 2016 | Pelgrane Press | Trail of Cthulhu | |
| Beasts of Men | 65-66 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | Kentucky; 1939 |
| Beasts of Men | 176-177 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | Kentucky; 1939 |
| Between Heart Beats | 2-19 | Between Heart Beats | | Nov 2023 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| The Black Chateau | 134-147 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| The Black Drop | 3-23 | The Black Drop | PELGT13 | 2010 | Pelgrane Press | Trail of Cthulhu | Southern Ocean |
| The Black Drop | 34-73 | Out of Time | PELGT22 | 2011 | Pelgrane Press | Trail of Cthulhu | Southern Ocean |
| The Book | 40-58 | Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu | New York; 1920s |
| The Book | 42-60 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu | New York; 1920s |
| Bookhounds | 8-20 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| The Box of Sathla | 87-101 | Bayt al Azif | 4 | Jan 2022 | Bayt al Azif Inc | Call of Cthulhu (Classic), Trail of Cthulhu | Boston; 1920s |
| Breaking the Machine | 18-19 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Breaking the Machine | 21-22 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Brick Kiln | 31-33, 35-42 | The Unspeakable Oath | 19 | Mar 2011 | Pagan Publishing | Trail of Cthulhu | England; 1930s; Rat Thing |
| The Brick Kiln | 113-124 | Old Ones Rising | | 2017 | Arc Dream Publishing | Trail of Cthulhu | England; 1930s; Rat Thing |
| Bright Futures | 11-29 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | England; Summer; 1939 |
| Bright Futures | 125-143 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; Summer; 1939 |
| British Antiquities | 125-197 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| Building a Bookhounds Campaign | 80-93 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Building an Investigator | 3-8 | Condensed Rules for Trail of Cthulhu | | 2014 | Pelgrane Press | Trail of Cthulhu | |
| Building Mysteries | 63-66 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Building Mysteries | 64-67 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Byakhee | | Ken Writes About Stuff | v2n8 | Oct 2014 | Pelgrane Press | Trail of Cthulhu | |
| Campaign Frame - Mythos Detectives | 5-6 | Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu | |
| Campaign Frame - Mythos Detectives | 5-6 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Campaign Frames | 204-213 | Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Carcosa Fringe Festival | 7-9 | The Dark Times | 1 | Aut 2017 | Self Published | Trail of Cthulhu | London |
| Cast a Deadly Spell | 17-27 | Rough Magicks | PELGT09 | 2009 | Pelgrane Press | Trail of Cthulhu | |
| Castle Bravo | 3-30 | Castle Bravo | PELGT12 | 2010 | Pelgrane Press | Trail of Cthulhu | Oceania; 1954 |
| Castle Bravo | 133-159 | Out of Time | PELGT22 | 2011 | Pelgrane Press | Trail of Cthulhu | Oceania; 1954 |
| Casualties | 17 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Casualties | 20 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Causes | 8-9 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Causes | 11-12 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Cerulean Halo | 206-225 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Oceania; 1938; Deep One |
| Chat-DMT | 2-59 | Chat-DMT | | Mar 2024 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | 2020s |
| Chiens de reve | 7-60 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| City Guide | 65-198 | Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu | |
| Clues, Tests amd Contests | 51-82 | Player's Guide | PELGT03 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Clues, Tests and Contests | 51-83 | Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Clues, Tests and Contests | 51-82 | Trail of Cthulhu: Player's Guide | PELGT03D | 2007 | Pelgrane Press | Trail of Cthulhu | |
| The Colchester Expedition | 19-30 | The Saga of Gaukur Trandilsson | | Oct 2023 | Xipe Totec Press | Delta Green, Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark | Scotland; Iceland; 1153 |
| Cold Feet | 67-69 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | Canada; 1939; Ithaqua |
| Cold Feet | 178-180 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | Canada; 1939; Ithaqua |
| The Coldest Walk | 109-130 | Out of the Woods | PELGT43 | 2017 | Pelgrane Press | Trail of Cthulhu | Wisconsin; Wendigo |
| Crime Scenes | 4-8 | Protodimension | 11 | Win 2012 | Kinstaff Media | Trail of Cthulhu | |
| The Cthulhu Mythos | 84-167 | Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Cults, Criminals and Sorcery | 36-64 | Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu | |
| The Dance in the Blood | 4-24 | The Dance in the Blood | PELGT14 | 2010 | Pelgrane Press | Trail of Cthulhu | England; 1935 |
| The Dance in the Blood | 73-93 | The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu | England; 1935 |
| The Dance in the Blood | | The Purist Adventures | PELGB4 | 2010 | Pelgrane Press | Trail of Cthulhu | England; 1935 |
| Danger | 02:00 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Dark Young | | Ken Writes About Stuff | v2n1 | Apr 2014 | Pelgrane Press | Trail of Cthulhu | |
| Darkness | 02:01 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Dead Horse Corner | 79-94 | Dulce Et Decorun Est | PELGT32 | 2014 | Pelgrane Press | Trail of Cthulhu | Belgium |
| The Dead White World | 14-23 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu | England; 1936 |
| The Dead White World | 81-89 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; 1936 |
| Death Across the Nile | 27-39 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | Egypt |
| Death Laughs Last | 42-61 | Stunning Eldritch Tales | PELGT02 | 2008 | Pelgrane Press | Trail of Cthulhu | New York |
| The Decaying Earth | 67-70 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| The Decaying Earth | 68-72 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Deep Ones | | Ken Writes About Stuff | v1n1 | Mar 2013 | Pelgrane Press | Trail of Cthulhu | |
| Default General Abilities | 1 | The Rap Sheet | 1 | May 2009 | Pelgrane Press | Trail of Cthulhu | |
| The Despite of Azatao | 40-43 | The Big Hoodoo | PELGT18 | 2011 | Pelgrane Press | Trail of Cthulhu | California; June; 1952 |
| The Despite of Azatao | 116-120 | Out of Time | PELGT22 | 2011 | Pelgrane Press | Trail of Cthulhu | California; 1952; June |
| The Devourers in the Mist | 5-21 | Stunning Eldritch Tales | PELGT02 | 2008 | Pelgrane Press | Trail of Cthulhu | Pacific Ocean |
 Diary of Henri Salem | 1-160 | Le Livre Des Fourmis | PELGT39 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| Diaspora | 3-90 | Diaspora | | Jan 2024 | Xipe Totec Press | Cthulhu Dark, Delta Green, Fear Itself, Call of Cthulhu (Now), Trail of Cthulhu | |
| Die Gloke | | Ken Writes About Stuff | v1n4 | Jul 2013 | Pelgrane Press | Trail of Cthulhu | |
| Die High | 10-27 | The Unspeakable Oath | 22 | Jan 2013 | Pagan Publishing | Trail of Cthulhu, Cthulhu Dark, Call of Cthulhu (Now) | Chicago; Lesser Race |
| Dimension Y | 62-79 | Stunning Eldritch Tales | PELGT02 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| The Dinner Guests | 1-2 | The Dinner Guests | | 2015 | Self Published | Trail of Cthulhu | 1930s |
| Disaster at Monongah Mining Company | 1-2 | Disaster at Monongah Mining Company | | 2015 | Self Published | Trail of Cthulhu | West Virginia; 1927 |
| Disasters | 10-16 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Disasters | 13-19 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| DotDotAsh | 2-25 | DotDotAsh | | Apr 2024 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark, Delta Green | |
| Double Feature | 7-10 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Down These Mean Streets | 27-39 | The Big Hoodoo | PELGT18 | 2011 | Pelgrane Press | Trail of Cthulhu | California; June; 1952 |
| Down These Mean Streets | 103-115 | Out of Time | PELGT22 | 2011 | Pelgrane Press | Trail of Cthulhu | California; June; 1952 |
| Dr Grave Dust | 51-66 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Dreaming of a Better Tomorrow for 30 Dollars a Month | 79-108 | Out of the Woods | PELGT43 | 2017 | Pelgrane Press | Trail of Cthulhu | Vermont; 1935; Serpentman |
| Dreams in the Deep | 1-2 | Dreams in the Deep | | 2015 | Self Published | Trail of Cthulhu | France; 1925; March |
| Dreams of Dracula | 67-78 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | England |
| Drives | 26-28 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Drives | 28-29 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Dulce Et Decorum Est | 4-52 | Dulce Et Decorun Est | PELGT32 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| The Dwellers in the Dunes | 30-49 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Mongolia; 1930s; Tcho-Tcho |
| The Dying of St Margaret's | 3-27 | The Dying of St Margaret's | PELGT07 | 2009 | Pelgrane Press | Trail of Cthulhu | Scotland |
| The Dying of St Margaret's | 22-45 | The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu | Scotland |
| The Dying of St Margaret's | | The Purist Adventures | PELGB4 | 2010 | Pelgrane Press | Trail of Cthulhu | Scotland |
| Edgar | 02:15 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| The Elder Patmos | 70-74 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | 1939; Great Race of Yith |
| The Elder Patmos | 195-197 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | 1939; Great Race of Yith |
| End Credits | 01:06 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Endless Spinning | 2-14 | Endless Spinning | | Dec 2023 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | |
| Equipment | 41-44 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Equipment | 41-45 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Ethiopia | 04:05 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Ethiopia | 183-218 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Ethiopia; 1930s |
| The Evident City | 14-24 | Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu | |
| Expeditions and the Armitage Enquiry | 20-29 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| Fearful Symmetries | 93-108 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | England |
| The Final Reel | 174-189 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| The Final Revelation | 5-21 | The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu | England |
| Flying Coffins | 4-23 | Flying Coffins | PELGT27 | 2012 | Pelgrane Press | Trail of Cthulhu | Europe; Winter; 1918; Byakhee |
| Flying Coffins | 42-76 | Out of Space | PELGT30 | 2013 | Pelgrane Press | Trail of Cthulhu | Europe; Winter; 1918; Byakhee |
| Foul Congeries I | | Ken Writes About Stuff | v1Bonus | Apr 2014 | Pelgrane Press | Trail of Cthulhu | |
| Foul Congeries II | | Ken Writes About Stuff | v2Bonus | Feb 2015 | Pelgrane Press | Trail of Cthulhu | |
| Foul Congeries III | | Ken Writes About Stuff | v3Bonus | Mar 2016 | Pelgrane Press | Trail of Cthulhu | |
| Freshly Turned Earth | 2-27 | Freshly Turned Earth | | Dec 2023 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | England; June |
| Game Mechanics | 9-24 | Condensed Rules for Trail of Cthulhu | | 2014 | Pelgrane Press | Trail of Cthulhu | |
| The Gatherer of Nightmares | 1-2 | The Gatherer of Nightmares | | 2015 | Self Published | Trail of Cthulhu | London; 1911; Autumn |
| Ghouls | | Ken Writes About Stuff | v1n7 | Oct 2013 | Pelgrane Press | Trail of Cthulhu | |
| The God Of Prosthetics | 2-37 | The God Of Prosthetics | | Nov 2023 | Xipe Totec Press | Delta Green, Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Cthulhu Dark | |
| Goddess of the Soil | 114-118 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; 1936; Shub-Niggurath |
| Goetia | | Ken Writes About Stuff | v2n11 | Jan 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Great Race of Yith | | Ken Writes About Stuff | v3n3 | May 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Green Ape | 79-92 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| GUMSHOE Expeditions | 10-19 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| Hangar | 02:00 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| The Haunted House Conversion Notes | 1-5 | The Haunted House Conversion Notes | | 2008 | Self Published | Trail of Cthulhu | |
| Hell Fire | 5-32 | Hell Fire | PELGT26 | 2011 | Pelgrane Press | Trail of Cthulhu | London; 1760s; Y'Golonac |
| Hell Fire | 120-160 | Out of Space | PELGT30 | 2013 | Pelgrane Press | Trail of Cthulhu | London; 1760s; Y'Golonac |
| Henslowe | 02:29 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Heroes of the Sea | 3-39 | Zero Point, Part 2 - Heroes of the Sea | MPS01012T | 2013 | Modiphius Entertainment | Trail of Cthulhu | France; May; 1940 |
| Hideous Creatures | 7-342 | Hideous Creatures | PELGT47 | 2019 | Pelgrane Press | Trail of Cthulhu | |
| Holy Abominable | 2-41 | Holy Abominable | | Oct 2023 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Fear Itself | |
| The Horror of the Glen Conversion Notes | 1-4 | The Horror of the Glen Conversion Notes | | 2008 | Self Published | Trail of Cthulhu | |
| Hounds of Tindalos | | Ken Writes About Stuff | v1n3 | May 2013 | Pelgrane Press | Trail of Cthulhu | |
| Hunted | 01:58 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Hunting Horror | | Ken Writes About Stuff | v3n6 | Aug 2015 | Pelgrane Press | Trail of Cthulhu | |
| Idiosynxratic Magic Expanded | 28-32 | Rough Magicks | PELGT09 | 2009 | Pelgrane Press | Trail of Cthulhu | |
| In Requiem | 63-64 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | Minnesota; 1939 |
| In Requiem | 174-175 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | Minnesota; 1939 |
| In The Mountain | 01:00 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| An Incident at the Border | 86-103 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Paraguay; August; 1930s; Dark Young of Shub-Niggurath |
| Incommers | 2-18 | Incommers | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| Incommers | 110-125 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | |
| Inhuman Trafficking | 2-31 | Inhuman Trafficking | | Sep 2023 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Cthulhu Obscura | |
| Intersections | 2-21 | Intersections | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| Intersections | 68-92 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| Introduction | 4-7 | Trail of Cthulhu Quickstart Rules | PELGT201QS | Oct 2024 | Pelgrane Press | Trail of Cthulhu | |
| Invasive Procedures | 4-35 | Invasive Procedures | PELG09 | 2011 | Pelgrane Press | Trail of Cthulhu, Fear Itself | |
| Investigative Abilities | 4-37 | Keeper's Resource Book and Screen | PELGT04 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Investigative Abilities | 29-33 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Investigative Abilities | 30-34 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Investigator | 9-50 | Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| The Investigator | 9-50 | Player's Guide | PELGT03 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| The Investigator | 9-50 | Trail of Cthulhu: Player's Guide | PELGT03D | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Investigator Passports | 1-6 | Investigator Passports | | 2019 | base113 Games | Trail of Cthulhu, Call of Cthulhu (Classic) | |
| The Investigators | 6-8 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| The Investigators | 74-76 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Island Approach | 00:32 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Items | 19-25 | The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu | |
| The Jaguars of El-Thar | 104-121 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Mexico; 1930s; Cat from Saturn |
| Jazz Age Newspapers | | Mutable Deceptions Vol 1: Jazz Age Newspapers | cr7001 | 2013 | Cthulhu Reborn | Call of Cthulhu (Classic), Trail of Cthulhu | |
| Judge, Jury, and | 2-40 | Judge, Jury, and | | Jan 2024 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark, Delta Green | |
| Kadath aujourd'hui, demain le monde | 126-135 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| Keeper Introduction | 28-42 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | |
| The Keepers of the Woods | | The Keepers of the Woods | | 2015 | Self Published | Trail of Cthulhu | England; January; 1934 |
| The Keepers of the Woods | 4-29 | The Keepers of the Woods | | 2016 | Self Published | Trail of Cthulhu | England; January; 1935 |
| Kepers of the City | 25-35 | Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu | |
| The Kidnapping | 7-20 | Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu | New York |
| The Kidnapping | 7-22 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu | New York |
| The King's Men | 80-99 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu | New York; 1932 |
| The Kingsbury Horror | 214-227 | Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu | Ohio; 1938; August |
| La Forteresse de Maidoror | 136-151 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | Dreamlands |
| Las Vegas: 1968 | | Ken Writes About Stuff | v3n9 | Nov 2015 | Pelgrane Press | Trail of Cthulhu | |
| Les Rues de Paris | 71 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| Letters from Ghosts | 24-37 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu | England; 1936 |
| Letters from Ghosts | 90-100 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; 1936 |
| The Light in Their Eyes | 2-69 | The Light in Their Eyes | | Nov 2024 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu | California |
| Lilith | | Ken Writes About Stuff | v1n12 | Mar 2014 | Pelgrane Press | Trail of Cthulhu | |
| Lloigor | | Ken Writes About Stuff | v2n6 | Aug 2014 | Pelgrane Press | Trail of Cthulhu | |
| A Load Of Blarney | 188-205 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Ireland; 1938 |
| The Locksmith | 1-2 | The Locksmith | | 2015 | Self Published | Trail of Cthulhu | London |
| The London Mythos | 61-66 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| London on the Shores of Lake Hali | 1-2 | London on the Shores of Lake Hali | | 2015 | Self Published | Trail of Cthulhu | London; 1930s |
| London's Monsters | 67-79 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| The Long Con | 5-30 | The Long Con | PELGT41 | 2016 | Pelgrane Press | Trail of Cthulhu | London |
| The Long Hook | 8-26 | The Big Hoodoo | PELGT18 | 2011 | Pelgrane Press | Trail of Cthulhu | California; June; 1952 |
| The Long Hook | 84-102 | Out of Time | PELGT22 | 2011 | Pelgrane Press | Trail of Cthulhu | California; June; 1952 |
| Looking Glass: Hong Kong | 3-16 | Looking Glass: Hong Kong | PELGN13 | 2017 | Pelgrane Press | Trail of Cthulhu | |
| The Lord of the Jungle | 93-107 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Los Angeles | 04:00 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Los Angeles Revisited | 04:00 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Los Angeles, California | 81-120 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Los Angeles; 1930s |
| Lost on a Sea of Dreams | 68-85 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Dreamlands |
| The Magic Ability | 7-16 | Rough Magicks | PELGT09 | 2009 | Pelgrane Press | Trail of Cthulhu | |
| Magick in Theory and Lovecraft | 33-36 | Rough Magicks | PELGT09 | 2009 | Pelgrane Press | Trail of Cthulhu | |
| Main Title | 00:51 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Malta | 04:05 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Malta | 219-260 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Malta; 1930s |
| The Many Deaths of Edward Bigsby | 7-28 | The Many Deaths of Edward Bigsby | PELGT42 | 2016 | Pelgrane Press | Trail of Cthulhu | London |
| The Many Deaths of Edward Bigsby | 3-27 | The Many Deaths of Edward Bigsby | | 2014 | Innsmouth House Press | Trail of Cthulhu | London |
| Many Fires | 4-20 | Many Fires | PELGT25 | 2011 | Pelgrane Press | Trail of Cthulhu | Mexico; 1928; Autumn |
| Many Fires | 77-119 | Out of Space | PELGT30 | 2013 | Pelgrane Press | Trail of Cthulhu | Mexico; Autumn; 1928 |
| Martial Arts | | Ken Writes About Stuff | v1n2 | Apr 2013 | Pelgrane Press | Trail of Cthulhu | |
| Masks of Nyarlathotep Conversion Notes | 1-10 | Masks of Nyarlathotep Conversion Notes | | 2008 | Self Published | Trail of Cthulhu | |
| Meanwhile | 00:11 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| The Mechanics of Fear and Madness | 44-51 | RPG Review | 7 | Mar 2009 | Self Published | Trail of Cthulhu, Advanced Dungeons and Dragons (Ravenloft), Chill, Little Fears, GURPS, Vampyre the Masquerade, Call of Cthulhu (Classic), Kult | |
| Media | 34-39 | The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu | |
| Medic! | 3-4 | The Rap Sheet | 3 | Aug 2009 | Pelgrane Press | Trail of Cthulhu | |
| Mexico | 04:00 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Mexico City | 261-306 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Mexico; 1930s |
| Mi-Go | | Ken Writes About Stuff | v1n5 | Sep 2013 | Pelgrane Press | Trail of Cthulhu | |
| Midnight Sub Rosa | 7-43 | Out of the Woods | PELGT43 | 2017 | Pelgrane Press | Trail of Cthulhu | Alabama; 1936; April |
| The Milk of Shub-Niggurath | 1-6 | Secrets of Salem: The Milk of Shub-Niggurath | 7 | 2020 | The Ghoul's Notes | Trail of Cthulhu | Massachusetts; 1930 |
| The Millionaire's Special | 4-18 | RMS Titanic: The Millionaire's Special | PELGT28 | 2012 | Pelgrane Press | Trail of Cthulhu | Atlantic Ocean; 1912 |
| The Millionaire's Special | 161-176 | Out of Space | PELGT30 | 2013 | Pelgrane Press | Trail of Cthulhu | Atlantic Ocean; April; 1912 |
| Mind Control | | Ken Writes About Stuff | v1n10 | Jan 2014 | Pelgrane Press | Trail of Cthulhu | |
| Minor Mouth | 00:11 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Moon Dust Men | | Ken Writes About Stuff | v1n6 | Sep 2013 | Pelgrane Press | Trail of Cthulhu | |
| The Mother of Maleria | 50-67 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Zimbabwe |
| Mumbai | | Ken Writes About Stuff | v1n8 | Nov 2013 | Pelgrane Press | Trail of Cthulhu | |
| The Murderer of Thomas Fell | 6-25 | The Murderer of Thomas Fell | | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Mythos Entities | 52-60 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Mythos Entities | 53-61 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Mythosophobia | 2-22 | Mythosophobia | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Confidential, Delta Green, Call of Cthulhu (Now) | |
| Mythoturbation | 93-109 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| Mythoturbation | 2-18 | Mythoturbation | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | |
| Names | 7-17 | The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu | |
| The Nation Set Free | 30-46 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | England; 1939; Summer; Insect from Shaggai |
| The Nation Set Free | 144-159 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; 1939; Summer; Insect from Shaggai |
| New Clear Semiotics | 52-67 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| New Clear Semiotics | 2-28 | New Clear Semiotics | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | |
| The New World | 62 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| The Night I Died | 108-120 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| The Non-Euclidean Man | 121-133 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Not So Quiet | 4-25 | Not So Quiet | PELGT15 | 2010 | Pelgrane Press | Trail of Cthulhu | Belgium; Spring; 1917 |
| Not So Quiet | 5-33 | Out of Time | PELGT22 | 2011 | Pelgrane Press | Trail of Cthulhu | France; 1917; Spring |
| NPCs | 46-65 | Keeper's Resource Book and Screen | PELGT04 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Occupations | 38-45 | Keeper's Resource Book and Screen | PELGT04 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Occupations | 20-25 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Occupations | 23-27 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| An Oneiric Resistance | 2-22 | An Oneiric Resistance | | 2016 | Xipe Totec Press | Cthulhu Dark, Call of Cthulhu (Now), Delta Green, Trail of Cthulhu, Cthulhu Confidential | |
| An Oneiric Resistance | 146-164 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | |
| Organizations | 58-66 | The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Paris Occulte | 93-103 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| People | 24-57 | The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| People | 91-92 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| People | 27-33 | The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu | |
| People | 219-260 | The Book of the New Jerusalem | PELGT46 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| People of the City | 7-13 | Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu | |
| Performance Peace | 2-47 | Performance Peace | | Mar 2024 | Xipe Totec Press | Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark, Delta Green | Scotland; Summer; 1970s |
| Persons | 117-145 | The Book of the Smoke | PELGT20 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Petruska's Assumption | 2-16 | Petruska's Assumption | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Fear Itself | |
| Pioneers | 189-194 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | 1939 |
| Places | 67-72 | The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Places | 1-116 | The Book of the Smoke | PELGT20 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Places | 72-78 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| Places | 41-42 | The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu | |
| Places | 1-218 | The Book of the New Jerusalem | PELGT46 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| Plans form the XXth Century | | Plans from the XXth century | 3001b | 2010 | Three Fourteen Games | Call of Cthulhu (Classic), Call of Cthulhu (Now), Trail of Cthulhu | |
| Players' Background and Investigators | 11-27 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | |
| Playing Act Three | 343-346 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | |
| Preacher-Man | | Preacher-Man | | 2013 | Arcane Footpad | Call of Cthulhu (Classic), Trail of Cthulhu, Savage Worlds (Realms of Cthulhu) | England; 1924 |
| The Preserve | 160-173 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| The Purchase of Curious Tomes | 21-40 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Putting It All Together | 190-203 | Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Putting it All Together | 92-93 | Trail of Cthulhu: Player's Guide | PELGT03D | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Putting It All Together Tips for Players | 92-93 | Player's Guide | PELGT03 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Rat-Things | | Ken Writes About Stuff | v2n10 | Dec 2014 | Pelgrane Press | Trail of Cthulhu | |
| The Read Through | 2-72 | The Read Through | | Dec 2023 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Cthulhu Obscura | |
| Recoil/Recall | 2-36 | Recoil/Recall | | Dec 2024 | Xipe Totec Press | Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Cthulhu Dark, Delta Green | |
| The Rending Box | 4-26 | The Rending Box | PELGT21 | 2011 | Pelgrane Press | Trail of Cthulhu | London |
| The Rending Box | 94-112 | The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu | England |
| The Repairer of Reputations | 4-37 | The Repairer of Reputations | PELGT23 | 2011 | Pelgrane Press | Trail of Cthulhu | New York; 1920 |
| The Repairer of Reputations | 4-41 | Out of Space | PELGT30 | 2013 | Pelgrane Press | Trail of Cthulhu | New York; 1920 |
| Resonance | 181-185 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | Massachusetts; 1939 |
| Retired | 00:32 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Return to Red Hook | 21-39 | Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu | New York |
| Return to Red Hook | 23-41 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu | New York |
| Ritual Pursuits | 3-5 | Ritual Pursuits | | 2011 | Pelgrane Press | Trail of Cthulhu | Indiana; 1931; Nightgaunt |
| Rue de reve | 104-125 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| The Rules | 11-13 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| The Rules | 79-80 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Ruminations | 03:08 | Four Shadows | PELGT05 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Rumors | 44-45 | The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu | |
| Run! | 01:58 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Running the Game | 31-56 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| Sacred Waters | 110-113 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; 1936 |
| Saigon 1968 | | Saigon: 1968 | PELGDG03D | 2021 | Pelgrane Press | Trail of Cthulhu | |
| Sandgrown | 38-48 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu | England; 1936 |
| Sandgrown | 101-109 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; 1936 |
| 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 | Georgia state; 1930s |
| Scenario Spines | 79-88 | The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Serpent Folk | | Ken Writes About Stuff | v2n4 | Jun 2014 | Pelgrane Press | Trail of Cthulhu | |
| Served Cold | 144-167 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Greenland |
| The Seventh Circle | 3-52 | The Seventh Circle | PELG014 | 2014 | Pelgrane Press | Trail of Cthulhu, Fear Itself | |
| Shanghai Bullets | 22-41 | Stunning Eldritch Tales | PELGT02 | 2008 | Pelgrane Press | Trail of Cthulhu | China; Star Vampire |
| Shoggoth | | Ken Writes About Stuff | v1n9 | Dec 2013 | Pelgrane Press | Trail of Cthulhu | |
| The Silence Mill | 44-78 | Out of the Woods | PELGT43 | 2017 | Pelgrane Press | Trail of Cthulhu | France; 1930s |
| Sisters of Sorrow | 95-111 | Dulce Et Decorun Est | PELGT32 | 2014 | Pelgrane Press | Trail of Cthulhu | Atlantic Ocean |
| Slang | 47-51 | The Book of Random Tables 1920s - 1930s | | 2020 | dicegeeks | Call of Cthulhu (Classic), Trail of Cthulhu | |
| Slaves of the Mother | 47-61 | Slaves of the Mother | PELGT31 | 2014 | Pelgrane Press | Trail of Cthulhu | England; Summer; 1939 |
| Slaves of the Mother | 160-173 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | England; Summer; 1939 |
| Soldiers of Pen and Ink | 6-62 | Soldiers of Pen and Ink | PELGT36 | 2014 | Pelgrane Press | Trail of Cthulhu | Spain; November; 1936 |
| The Spear of Destiny | | Ken Writes About Stuff | v3n2 | Apr 2015 | Pelgrane Press | Trail of Cthulhu | |
| 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 | |
| Stained Glass | 2-19 | Stained Glass | | 2016 | Xipe Totec Press | Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Cthulhu Dark, Delta Green | |
| Star Vampires | | Ken Writes About Stuff | v1n11 | Feb 2014 | Pelgrane Press | Trail of Cthulhu | |
| The Starry Wisdom | | Ken Writes About Stuff | v3n12 | Mar 2016 | Pelgrane Press | Trail of Cthulhu | |
| Starting The Campaign | 23-30 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| Stocastic Sparaogmas | 126-145 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Trail of Cthulhu, Cthulhu Dark, Delta Green, Call of Cthulhu (Now) | |
| Stochastic Sparaogmos | 2-23 | Stochastic Sparaogmos | | 2016 | Xipe Totec Press | Delta Green, Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Cthulhu Dark | |
| Stranger Shores | 8-14 | Trail of Cthulhu Quickstart Rules | PELGT201QS | Oct 2024 | Pelgrane Press | Trail of Cthulhu | Rhode Island |
| Summon/Bind | 5-18 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| Summon/Bind | 2-16 | Summon/Bind | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| The Sunflower Masquerade Act 0 | 16-25 | The Dark Times | 3 | May 2018 | Self Published | Trail of Cthulhu | Arkham; October; 1935 |
| The Sunflower Masquerade Act 1 | 14-29 | The Dark Times | 4 | Feb 2019 | Self Published | Trail of Cthulhu | Arkham; November; 1935 |
| The Supporting Cast | 9-10 | The Dead White World | PELGT19 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| The Supporting Cast | 77-78 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Tale of Earl Matr | 13-19 | The Saga of Gaukur Trandilsson | | Oct 2023 | Xipe Totec Press | Call of Cthulhu (Dark Ages), Trail of Cthulhu, Cthulhu Dark, Delta Green | Iceland; Scotland; 1153 |
| Tcho-Tcho | | Ken Writes About Stuff | v3n1 | Mar 2015 | Pelgrane Press | Trail of Cthulhu | |
| Technology, Weapons, and Equipment | 83-91 | Player's Guide | PELGT03 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Technology, Weapons, and Equipment | 83-91 | Trail of Cthulhu: Player's Guide | PELGT03D | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Tension | 02:00 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Terror | 01:59 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| These Dread Pages | 4-23 | The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| They Are Real | 55-69 | Bayt al Azif | 4 | Jan 2022 | Bayt al Azif Inc | Call of Cthulhu (Classic), Trail of Cthulhu | France; 1931 |
| Thibet | 347-372 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Tibet; 1930s |
| Thicker Than Water | 186-188 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | Chicago; 1939; Deep One |
| The Thirties | 158-189 | Trail of Cthulhu | PELGT01 | 2007 | Pelgrane Press | Trail of Cthulhu | |
| Thirties London | 41-60 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Three Kings | 3-23 | Zero Point, Part 1 - Three Kings | MPS01011T | 2013 | Modiphius Entertainment | Trail of Cthulhu | Czech Republic; Summer; 1939 |
| Tibet | 04:02 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Tips for Players | 61-62 | The Apocalypse Machine | PELGT24 | 2011 | Pelgrane Press | Trail of Cthulhu | |
| Tips for Players | 62-63 | Cthulhu Apocalypse | PELGT40 | 2015 | Pelgrane Press | Trail of Cthulhu | |
| Tomb-Hounds of Egypt | | Ken Writes About Stuff | v2n12 | Feb 2015 | Pelgrane Press | Trail of Cthulhu | |
| Tomes and Magic | 73-78 | The Armitage Files | PELGT10 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Tongued by Fire | 122-143 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | India; 1930s |
| Trail of Cthulhu Theme (Pulp) | 01:00 | Four Shadows | PELGT05 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| Trail of Cthulhu Theme (Purist) | 01:02 | Four Shadows | PELGT05 | 2008 | Pelgrane Press | Trail of Cthulhu | |
| The Transition of Ludvig Prinn | 1-2 | The Transition of Ludvig Prinn | | 2015 | Self Published | Trail of Cthulhu | Arkham; Halloween; 1930s |
| Travelling 1 | 00:33 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Travelling 2 | 00:33 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| The Trembling Giant | 131-168 | Out of the Woods | PELGT43 | 2017 | Pelgrane Press | Trail of Cthulhu | Utah; 1937; Dark Young of Shub-Niggurath |
| Trouble With the Piping | 2-15 | Trouble With the Piping | | Aug 2023 | Xipe Totec Press | Call of Cthulhu (Now), Fear Itself, Trail of Cthulhu, Cthulhu Dark, Delta Green | |
| Ulthar: No Man May Kill a Cat | 2-28 | Ulthar: No Man May Kill a Cat | | Oct 2023 | Xipe Totec Press | Delta Green, Trail of Cthulhu, Cthulhu Obscura, Call of Cthulhu (Dreamlands), Cthulhu Dark | |
| Ultima Ratio | 33-44 | Bayt al Azif | 4 | Jan 2022 | Bayt al Azif Inc | Call of Cthulhu (Classic), Trail of Cthulhu | 1930s |
| Under a Werewolf Moon | 148-159 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | Germany |
| Unmasked Rally | 1-16 | Unmasked Rally | | 2016 | Xipe Totec Press | Delta Green, Call of Cthulhu (Now), Trail of Cthulhu, Cthulhu Dark | |
| Unmasked Rally | 19-33 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| The Vanishing Varigotti | 18-28 | The Dark Times | 2 | Jan 2018 | Self Published | Trail of Cthulhu | Arkham |
| Vaterland | 53-78 | Dulce Et Decorun Est | PELGT32 | 2014 | Pelgrane Press | Trail of Cthulhu | New York; 1914 |
| Voodoo 1 - Magic | | Ken Writes About Stuff | v2n2 | May 2014 | Pelgrane Press | Trail of Cthulhu | |
| Voodoo 2 - The Invisibles | | Ken Writes About Stuff | v2n3 | Jun 2014 | Pelgrane Press | Trail of Cthulhu | |
| Votre avant-gardiste | 61-69 | Dreamhounds of Paris | PELGT38 | 2014 | Pelgrane Press | Trail of Cthulhu | |
| The Watchers in the Sky | 5-33 | The Watchers in the Sky | PELGT11 | 2010 | Pelgrane Press | Trail of Cthulhu | England |
| The Watchers in the Sky | 46-72 | The Final Revelation | PELGT33 | 2013 | Pelgrane Press | Trail of Cthulhu | England |
| The Watchers in the Sky | | The Purist Adventures | PELGB4 | 2010 | Pelgrane Press | Trail of Cthulhu | England |
| Wendigo | | Ken Writes About Stuff | v3n5 | Jul 2015 | Pelgrane Press | Trail of Cthulhu | |
| The Whisperer in the Light | 199-216 | Cthulhu City | PELGT44 | 2017 | Pelgrane Press | Trail of Cthulhu | Arkham |
| Whispers of Harlem | | Whispers of Harlem | DHSP2 | 2018 | Darker Hue Studios | Trail of Cthulhu, Call of Cthulhu (Classic) | New York |
| Whistle and I'll Come | 168-187 | Mythos Expeditions | PELGT37 | 2014 | Pelgrane Press | Trail of Cthulhu | Papua New Guinea; 1937; Flying Polyp |
| White Bokor | 40-50 | Shadows Over Filmland | PELGT06 | 2008 | Pelgrane Press | Trail of Cthulhu | Caribbean Sea |
| Whitechapel Black-Letter | 94-113 | Bookhounds of London | PELGT16 | 2010 | Pelgrane Press | Trail of Cthulhu | London; 1930s |
| William Blake | 9-22 | Fearful Symmetries | PELGT45 | 2021 | Pelgrane Press | Trail of Cthulhu | |
| The Wonder at Mercury | 34-51 | Mythos in Medias Res | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | France |
| The Wonder at Mercury | 2-20 | The Wonder at Mercury | | 2016 | Xipe Totec Press | Cthulhu Dark, Delta Green, Call of Cthulhu (Now), Trail of Cthulhu | |
| The Wreck | 59-77 | Arkham Detective Tales | PELGT08 | 2009 | Pelgrane Press | Trail of Cthulhu | New York |
| The Wreck | 61-79 | Arkham Detective Tales (Extended Edition) | PELGT08 | 2010 | Pelgrane Press | Trail of Cthulhu | New York |
| Yucatan | 04:04 | Eternal Lies Suite | PELGT17 | 2010 | Pelgrane Press | Trail of Cthulhu | |
| Yucatan | 307-342 | Eternal Lies | PELGT34 | 2013 | Pelgrane Press | Trail of Cthulhu | Mexico; 1930s |
