| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 Across Land and Sky | 51-69 |  Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
 Adventure Seeds | 113-115 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Amber Waves | 45-69 |  APOCTHULHU Quickstart Rules | cr6101 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| And Madness Shall Rise to Devour the West | 69-104 | Red Eye of Azathoth | REAz | 2011 | Kobold Quarterly | Call of Cthulhu (Darker Trails) | Arizona; 1887 |
 Anglo-Saxon England | 71-97 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Anglo-Saxon England | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Baccanalia | 47-57 | Cthulhu Invictus Companion | CHA23119 | 2011 | Chaosium | Call of Cthulhu (Invictus) | Tunisia |
| Beasts and Behemoths | 95-99 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| The Bestiary | 61-72 | Cthulhu Invictus | CHA0301 | 2004 | Chaosium | Call of Cthulhu (Invictus) | |
| The Bestiary | 102-130 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Bestiary | 132-152 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Bestiary | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Character Creation | 27-50 | Cthulhu Invictus | CHA0301 | 2004 | Chaosium | Call of Cthulhu (Invictus) | |
| Character Creation | 61-72 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Chuma Invictus! | 105-118 | Cthulhu Invictus | CHA0301 | 2004 | Chaosium | Call of Cthulhu (Invictus) | Egypt; Nightgaunt |
| Chuma Invictus! | 9-26 | Cthulhu Invictus Companion | CHA23119 | 2011 | Chaosium | Call of Cthulhu (Invictus) | Egypt; Nightgaunt |
| Cogs in the Machine | 100-112 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Cold Harvest | 5-43 | Cold Harvest | CHA23143 | 2014 | Chaosium | Call of Cthulhu (Classic) | Russia; 1930s |
| Combat | 83-88 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Combat | 35-37 | APOCTHULHU Quickstart Rules | cr6101 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Combat | 45-62 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 43-59 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 44-60 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 43-59 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 50-66 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 44-62 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 47-64 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 46-63 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 42-60 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 45-61 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 49-67 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Combat | 49-67 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| The Community of Totburh | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Constantinople 1000AD | 19-28 |  Worlds of Cthulhu | 5 | Jan 2007 | Pegasus Press | Call of Cthulhu (Dark Ages) | |
| Core Game Concepts | 5 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 4 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 4 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 4 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 6 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 4 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 5 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 4 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 3 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 3 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 6 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Core Game Concepts | 6 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Crime and Punishment | 8-13 | Lux in Tenebras | MRP0006 | 2011 | Miskatonic River Press | Call of Cthulhu (Invictus) | |
| Cthulhu By Gaslight | 35-40 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Gaslight) | |
| Cthulhu Dark Ages | 15-22 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Cthulhu End Times | 57-61 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (End Time) | |
| Cthulhu Icarus | 47-56 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Strange Aeons) | |
| Cthulhu Invictus | 7-14 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Invictus) | |
| Cthulhu Invictus: Bestiae | | Cthulhu Invictus: Bestiae | BESTIAE_PDF | 2010 | Chaosium | Call of Cthulhu (Invictus) | |
| Cthulhu Invictus: Fabulae | | Cthulhu Invictus: Fabulae | FABULAE_PDF | 2010 | Chaosium | Call of Cthulhu (Invictus) | |
| Cthulhu Invictus: Patrocinium | | Cthulhu Invictus: Patrocinium | PATROCINIUM_PDF | 2010 | Chaosium | Call of Cthulhu (Invictus) | |
| Cthulhu Invictus: Populus | | Cthulhu Invictus: Populus | POPULUS_PDF | 2010 | Chaosium | Call of Cthulhu (Invictus) | |
| Cthulhu Mythos in the Dark Ages | 106-121 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| The Cthulhu Mythos in the Dark Ages | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Cultarum Aegypti | 6-8 | Cthulhu Invictus Companion | CHA23119 | 2011 | Chaosium | Call of Cthulhu (Invictus) | |
| Cultarum Africae | 45-46 | Cthulhu Invictus Companion | CHA23119 | 2011 | Chaosium | Call of Cthulhu (Invictus) | |
| Cultarum Gallia | 27-30 | Cthulhu Invictus Companion | CHA23119 | 2011 | Chaosium | Call of Cthulhu (Invictus) | |
| Cults and Secret Societies | 73-86 | Cthulhu Invictus | CHA0301 | 2004 | Chaosium | Call of Cthulhu (Invictus) | |
| Cults and Secret Societies | 131-144 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Dark Age Investigators | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Dark Ages Grimoire | 122-131 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Designing New Archetypes | 95-97 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 91-93 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 92-94 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 90-92 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 98-100 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 96-98 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 94-96 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 104-106 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 92-94 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 91-93 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 104-106 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Designing New Archetypes | 104-106 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Doom | 31-46 | De Horrore Cosmico | GGP1502 | 2015 | Golden Goblin Press | Call of Cthulhu (Invictus) | Rome |
| The Doom that Came to Wessex | 186-193 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | England |
| The Doom That Came to Wessex | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Downtime | 81-84 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 76-80 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 77-81 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 76-79 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 84-87 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 81-85 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 80-83 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 82-85 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 79-82 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 77-80 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 90-93 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Downtime | 90-93 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Dreamlands | 41-46 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Dreamlands) | |
| Equipment | 63-67 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 60-64 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 60-65 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 59-63 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 66-71 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 62-67 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 64-68 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 64-68 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 60-64 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 61-65 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 67-71 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment | 67-71 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Equipment and Supplies | 78-81 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Equipment and Weapons | 27-33 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Eseweald | 194-201 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | England; Summer |
| Eseweald | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| The Firelands of Melqart | 136-139 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Fires of Hatred Defile the Sky | 36-51 | Red Eye of Azathoth | REAz | 2011 | Kobold Quarterly | Call of Cthulhu (Strange Aeons) [1487AD] | Spain; 1487 |
| Food for Worms | 165-184 | The 7th Edition Guide to Cthulhu Invictus | GGP1801 | 2018 | Golden Goblin Press | Call of Cthulhu (Invictus) | Rome |
| The Game | 39-45 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 37-43 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 37-43 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 37-43 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 43-49 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 37-44 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 41-47 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 40-46 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 36-42 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 38-45 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 42-49 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| The Game | 42-49 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Game System | 46-63 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Game System | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Game System | 31-34 | APOCTHULHU Quickstart Rules | cr6101 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| The God From the Uttermost South | 132-135 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| The Grimoire | 51-60 | Cthulhu Invictus | CHA0301 | 2004 | Chaosium | Call of Cthulhu (Invictus) | |
| The Grimoire | 91-101 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Gumshoe Creature Conversions | 102-103 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 98-99 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 99-100 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 97-99 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 105-106 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 103-104 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 101-102 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 111-112 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 99-100 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 98-99 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 111-112 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Gumshoe Creature Conversions | 111-112 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Heroes of the Soviet Union | 35-43 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Hidden and Forgotten Knowledge | 88-94 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| The House of Wisdom | 19-27 | Worlds of Cthulhu | 3 | Jun 2005 | Pegasus Press | Call of Cthulhu (Dark Ages) | |
| The Hunt | 176-185 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | England; December |
| The Hunt | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Introduction | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Investigative Horror in the Dark Ages | 98-105 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Investigative Horror in the Dark Ages | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Investigator Creation | 6-26 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Keeper's Notes: Cairo | 228-259 |  The Masks of Nyarlathotep Companion (Limited) | 60-MONC-08 | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | |
| Keeper's Notes: Cairo | 212-241 | The Masks of Nyarlathotep Companion (Unlimited) | 60-MONC-03 (?) | 2016 | Sixtystone Press | Call of Cthulhu (Classic) | |
| Lost Shall Be Those Bearing Souls Split in Twain | 52-68 | Red Eye of Azathoth | REAz | 2011 | Kobold Quarterly | Call of Cthulhu (Strange Aeons) [1587AD] | North Carolina; 1587 |
| Maddening Revelations | 85-90 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 81-86 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 82-87 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 80-85 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 88-93 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 86-91 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 84-89 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 86-91 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 83-88 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 81-86 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 94-99 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Maddening Revelations | 94-99 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Morituri Te Salutamus | 87-104 | Cthulhu Invictus | CHA0301 | 2004 | Chaosium | Call of Cthulhu (Invictus) | Rome; Summer; Dark Young of Shub-Niggurath |
| Morituri Te Salutamus | 30-44 | Cthulhu Invictus Companion | CHA23119 | 2011 | Chaosium | Call of Cthulhu (Invictus) | Rome; Summer; Dark Young of Shub-Niggurath |
| Mythic Iceland | 23-30 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Strange Aeons) | |
| A Night in the Mountains | 47-52 |  Demonground | 15 | Sep 2002 | Self Published | Call of Cthulhu (Now) | New York State; 2000s; Dimensional Shambler |
| Nightmares and Worse | 41-46 | Protodimension | 11 | Win 2012 | Kinstaff Media | Call of Cthulhu (Classic), Basic Role-Playing | |
| Nyarlathotep Unmasked | 129-131 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Player's Guide to the Dark Ages | 34-45 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| The Pre-Apocalypse World | 125 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Prophylaxis Panacea Efqa | 148-160 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Invictus) | Syria; March; Great Old One |
| Protagonists | 6-39 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 5-37 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 5-37 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 5-37 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 7-43 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 5-37 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 6-41 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 5-39 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 4-35 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 4-38 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 7-42 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Protagonists | 7-42 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Recovering Sanity | 82 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Red in Tooth and Claw | | Red in Tooth and Claw | cr5403 | Nov 2023 | Cthulhu Reborn | Cthulhu Eternal | Australia; September; 1914 |
| The Roman Legions | 145-147 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Roman Siege Weapons | 89-90 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Sanity | 64-70 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Sanity | 38-41 | APOCTHULHU Quickstart Rules | cr6101 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Sanity | 70-80 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 65-76 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 67-77 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 65-76 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 73-84 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 69-81 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 69-80 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 71-81 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 68-79 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 67-77 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 79-90 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Sanity | 79-90 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Shake the Disease | 144-146 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| A Short Tour Around Mare Nostrum | 20-60 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| The Silence of Thousands Shall Quell the Refrain | 20-35 | Red Eye of Azathoth | REAz | 2011 | Kobold Quarterly | Call of Cthulhu (Strange Aeons) [1287AD] | Japan; 1287 |
| Skills | 73-77 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Smuggling | 56 | The Unspeakable Oath | 24 | Jul 2014 | Pagan Publishing | Call of Cthulhu (Now) | |
| The Soviet War Machine | 27-34 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| The Stars Turn, Turn, Turn | 126-128 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Supernatural Effects | 91-94 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 86-90 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 87-91 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 85-89 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 93-97 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 91-95 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 89-93 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 91-103 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 88-91 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 86-90 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 99-103 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Supernatural Effects | 99-103 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Survivors | 4-30 | APOCTHULHU Quickstart Rules | cr6101 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Swords and Arrows | 31-34 | Cthulhu Through the Ages | CHA23146 | 2014 | Chaosium | Call of Cthulhu (Strange Aeons) | |
| Target Verification | 2008 |  The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | |
| That Which is Dead Shall Refuse to Lie | 7-19 | Red Eye of Azathoth | REAz | 2011 | Kobold Quarterly | Call of Cthulhu (Dark Ages) | England |
| This Fecund Planet | 150-153 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| This Fecund Planet | 42-44 | APOCTHULHU Quickstart Rules | cr6101 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| This Silent World | 147-149 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| A to Z of the Dark Ages | | Cthulhu Dark Ages | CHA23165 | 2020 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Totburh | 153-175 | Cthulhu Dark Ages | CHA23143 | 2015 | Chaosium | Call of Cthulhu (Dark Ages) | |
| Translating Creatures from D100 Games | 97-102 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 93-98 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 94-99 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 92-97 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 100-105 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 98-103 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 96-101 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 106-111 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 94-99 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 93-98 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 106-111 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Translating Creatures from D100 Games | 106-111 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
| Tundra, Taiga, and Steppe | 16-26 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| The Unclean | 149-172 | World War Cthulhu: Cold War - Covert Actions | CB71972 | 2017 | Cubicle 7 | Call of Cthulhu (Cold War) | Russia; 1970s |
| The Unclean | 2015 | The Fairfield Project | | | Self Published | Call of Cthulhu (Delta Green) | Russia |
| Under the Charcoal Sky | 140-143 | APOCTHULHU | cr6100 | 2020 | Cthulhu Reborn | APOCTHULHU | |
| Up Jumped the Reaper | 85-90 | Fear's Sharp Little Needles | 3005 | 2018 | Stygian Fox | Call of Cthulhu (Now) | North Carolina |
| Vehicles | 67-69 | Cthulhu Eternal: Cold War Era | cr5004 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 64-65 | Cthulhu Eternal: Jazz Age | cr5002 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 65-66 | Cthulhu Eternal: Modern Age | cr5003 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 63-65 | Cthulhu Eternal: Victorian Era | cr5001 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 71-73 | Cthulhu Eternal: Age of Revolutions | cr5005 | 2022 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 67-69 | Cthulhu Eternal: World War II | cr5006 | 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 68-69 | Cthulhu Eternal: Medieval | cr5008 | May 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 68-70 | Cthulhu Eternal: Future | cr5010 | Oct 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 64-68 | Cthulhu Eternal: World War I | cr5009 | Sep 2023 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 65-66 | Cthulhu Eternal: Classical Era | cr5011 | Jun 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 71-79 | Cthulhu Eternal: Age of Sail | cr5012 | Dec 2024 | Cthulhu Reborn | Cthulhu Eternal | |
| Vehicles | 71-79 | Cthulhu Eternal: Elizabethan | cr5013 | Jan 2026 | Cthulhu Reborn | Cthulhu Eternal | |
 Victory Day | | Puncture Wounds | SFX-4000 | Aug 2018 | Stygian Fox | None | |
| Visitor's Guide to Ancient Rome | 1-26 | Cthulhu Invictus | CHA0301 | 2004 | Chaosium | Call of Cthulhu (Invictus) | |
| Weapons and Gear | 44-50 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| The Weird and the Wonderful | 70-87 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
| Welcome to Rome | 6-19 | Cthulhu Invictus | CHA23115 | 2009 | Chaosium | Call of Cthulhu (Classic) | |
| Welcome to the Eastern Front | 3-15 | Guide to the Eastern Front | MUH01053CS | 2014 | Modiphius Entertainment | Savage Worlds (Achtung!), Call of Cthulhu (Achtung!) | |
