| Title | Pages | Publication | Code | Date | Publisher | System (Setting) |
|---|
 10 Reflections on Lovecraft | |  10 Reflections on Lovecraft | | 2018 | Skirmisher Publishing | Pathfinder | |
 13 Ghosts | 195-202 |  The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Classic), Pathfinder, Dungeons and Dragons | Pennsylvania; 1921 |
| Archetypes of Azathoth | 1-5 | Archetypes of Azathoth | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Bokrug | 1-4 | Archetypes of Bokrug | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Cthulhu | 1-6 | Archetypes of Cthulhu | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Dagon | 1-5 | Archetypes of Dagon | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Hastur | 1-5 | Archetypes of Hastur | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Leng | 1-5 | Archetypes of Leng | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Nyarlathotep | 1-5 | Archetypes of Nyarlathotep | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Shub-Niggurath | 1-5 | Archetypes of Shub-Niggurath | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of the Great Race of Yith | 1-6 | Archetypes of the Great Race of Yith | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of the Shoggoth | 1-6 | Archetypes of the Shoggoth | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of the Wind Walker | 1-5 | Archetypes of the Wind Walker | | 2017 | Necromancers of the West | Pathfinder | |
| Archetypes of Yig | 1-5 | Archetypes of Yig | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Yog-Sothoth | 1-5 | Archetypes of Yog-Sothoth | | 2016 | Necromancers of the West | Pathfinder | |
| Archetypes of Yuggoth | 1-6 | Archetypes of Yuggoth | | 2016 | Necromancers of the West | Pathfinder | |
| Beasts of Bright Mountain | 2-29 | Beasts of Bright Mountain | | 2017 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
| Belly of Rot | 2-18 | Belly of Rot | | 2016 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
| Bestiary | 82-? |  Black Stars Beckon | PZO90114 | 2016 | Paizo Publishing | Pathfinder | |
| Bestiary | 80-? | Dreams of the Yellow King | PZO90111 | 2016 | Paizo Publishing | Pathfinder | |
| Bestiary | 80-89 | In Search of Sanity | PZO90109 | 2016 | Paizo Publishing | Pathfinder | |
| Bestiary | 80-? | The Thrushmoor Terror | PZO90110 | 2016 | Paizo Publishing | Pathfinder | |
| Bestiary | 80-? | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder | |
| Bestiary | 80-? | What Grows Within | PZO90113 | 2016 | Paizo Publishing | Pathfinder | |
| Beyond the Veil | 167-185 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Pathfinder, Dungeons and Dragons, Call of Cthulhu (Classic) | Pennsylvania; 1920s |
| Beyond the Void | | Beyond the Void | LG020CC15L | 2013 | Legendary Games | Pathfinder | |
| Black Stars Beckon | 4-57 | Black Stars Beckon | PZO90114 | 2016 | Paizo Publishing | Pathfinder | Carcosa |
| The Bride's Carriage | 153-156 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Dungeons and Dragons, Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder | Spain; 1681 |
| The Buried Zikurat | | The Buried Zikurat | DNH2 | 2017 | Fat Goblin Games | Pathfinder | Fantasy World |
| Call to War | 2-17 | Call to War | | 2017 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
 Cattle and Their Allies | 74-79 | The Thrushmoor Terror | PZO90110 | 2016 | Paizo Publishing | Pathfinder | |
| Character Options | 52-87 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| Close Conversation | 76-81 | Black Stars Beckon | PZO90114 | 2016 | Paizo Publishing | Pathfinder | |
| Continuing the Campaign | 66-75 | Black Stars Beckon | PZO90114 | 2016 | Paizo Publishing | Pathfinder | |
| Corrupting Chant | | Corrupting Chant | | 2016 | Epic Level NPC | Pathfinder | |
| Cult of the Colour Out of Space | | Cult of the Colour out of Space | | 2015 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
| Cult of the Wendigo | | Cult of the Wendigo | | 2018 | Wayward Rogues Publishing | Pathfinder | Fantasy World; Wendigo |
| Cults | 170-201 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| The Dark Garden | 137-140 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder, Dungeons and Dragons | Spain; 1677; Autumn |
| The Delights of Enkada Pishtuhk | 9-12 | Midgard and Mythos | KP-Warlock-5E-1-Mythos | 2018 | Kobold Press | Pathfinder | |
| Despicable Deeds | 2-15 | Despicable Deeds | | 2016 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
| The Dollmaker | 74-79 | In Search of Sanity | PZO90109 | 2016 | Paizo Publishing | Pathfinder | |
| The Dread Butcher | 150-152 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder, Dungeons and Dragons | Spain; 1680 |
| Dread Secrets | 226-232 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Dungeons and Dragons, Call of Cthulhu (Classic), Pathfinder | Pennsylvania; 1935 |
| The Dread Wedding | 22-124 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Pathfinder, Dungeons and Dragons, Call of Cthulhu (Strange Aeons) [13th to 15th C] | Spain; 1681 |
| Dreams of the Yellow King | 4-55 | Dreams of the Yellow King | PZO90111 | 2016 | Paizo Publishing | Pathfinder | Fantasy World; Hastur |
| Ecology of the Yithian | 68-73 | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder | |
| The Elder Mythos | 62-73 | In Search of Sanity | PZO90109 | 2016 | Paizo Publishing | Pathfinder | |
| Eldritch Items | 1-4 | Eldritch Items | | 2016 | Necromancers of the West | Pathfinder | |
| Expanded Mythos Bestiary | 412-497 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| The Fall of the House of Tashmere | 157-158 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Dungeons and Dragons, Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder | |
| Fiends | | Fiends | | 2016 | Epic Level NPC | Pathfinder | |
| The Forbidden Mountains of Beldestan | 2-8 | Midgard and Mythos | KP-Warlock-5E-1-Mythos | 2018 | Kobold Press | Pathfinder | |
| Geist in the Gears | 241-245 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Strange Aeons) [Near Future], Pathfinder, Dungeons and Dragons | Spain; 2117 |
| Getting Started | 1-7 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| Ghostcatchers | 219-223 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Classic), Pathfinder, Dungeons and Dragons | Pennsylvania; 1931 |
| Gods in the Void | 1-9 | Gods in the Void | RGG4HP0110 | 2015 | Rogue Genius Games | Pathfinder | |
| The Good Hound | 148-149 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder, Dungeons and Dragons | Spain; 1680 |
| Great Old Ones and Outer Gods | 202-291 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| The Harrowing Hunger | 143-144 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder, Dungeons and Dragons | Spain; 1679 |
| Hastur the King in Yellow | 68-73 | The Thrushmoor Terror | PZO90110 | 2016 | Paizo Publishing | Pathfinder | |
| Horrors | 4-29 | Black Book of B'Nar | SPB1 | 2017 | Embers Design Studios | Pathfinder | |
| In Search of Sanity | 4-55 | In Search of Sanity | PZO90109 | 2016 | Paizo Publishing | Pathfinder | |
| Insanity and Dreams | 88-105 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| Introduction | 6-21 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Pathfinder, Dungeons and Dragons, Call of Cthulhu (Strange Aeons) [13th to 15th C] | |
| Legacy of the Unhinged Gardeners | 13-16 | Midgard and Mythos | KP-Warlock-5E-1-Mythos | 2018 | Kobold Press | Pathfinder | |
| The Lost Temple of Forgotten Evil | | The Lost Temple of Forgotten Evil | DNH1 | 2016 | Fat Goblin Games | Pathfinder | Fantasy World |
| The Machine Man | 213-217 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Pathfinder, Dungeons and Dragons, Call of Cthulhu (Classic) | Pennsylvania; 1929 |
| Madness | 36- | Black Book of B'Nar | SPB1 | 2017 | Embers Design Studios | Pathfinder | |
| Magic | 106-141 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| Magic | 31-35 | Black Book of B'Nar | SPB1 | 2017 | Embers Design Studios | Pathfinder | |
| Mythos | 7-33 | Mythos | LG041MY06 | 2013 | Legendary Games | Pathfinder | |
| Mythos Bestiary | 292-411 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| Mythos Items and Artifacts | 142-169 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| Mythos Monsters | | Mythos Monsters | LGP454HO04PF | 2022 | Legendary Games | Pathfinder | |
| Mythos Monsters | | Mythos Monsters | LGP454HO04PF2 | 2022 | Legendary Games | Pathfinder | |
| Mythos Races | 8-51 | Sandy Petersen's Cthulhu Mythos | | 2016 | Petersen Games | Pathfinder | |
| Mythos Too | | Mythos Too | LG102MY29 | 2014 | Legendary Games | Pathfinder | |
| The Necronomicon | 68-73 | What Grows Within | PZO90113 | 2016 | Paizo Publishing | Pathfinder | |
| New Corruption Manifestations | | New Corruption Manifestations Volume 1 | | 2016 | Necromancers of the Northwest | Pathfinder | |
| NPC Gallery | 58-65 | Black Stars Beckon | PZO90114 | 2016 | Paizo Publishing | Pathfinder | |
| NPC Gallery | 56-61 | Dreams of the Yellow King | PZO90111 | 2016 | Paizo Publishing | Pathfinder | |
| NPC Gallery | 56-61 | In Search of Sanity | PZO90109 | 2016 | Paizo Publishing | Pathfinder | |
| NPC Gallery | 56-61 | The Thrushmoor Terror | PZO90110 | 2016 | Paizo Publishing | Pathfinder | |
| NPC Gallery | 56-61 | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder | |
| NPC Gallery | 56-61 | What Grows Within | PZO90113 | 2016 | Paizo Publishing | Pathfinder | |
| Okeno, The Yellow City | 62-67 | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder | |
| Old Ones | | Old Ones | | 2016 | Epic Level NPC | Pathfinder | |
| The Peasants Have Lost Their Minds | | The Peasants Have Lost Their Minds | | 2020 | Dark By Dezign | Pathfinder, Dungeons and Dragons | Fantasy World; Mi-Go |
| Piercing the Veil | 186-190 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Dungeons and Dragons, Call of Cthulhu (Classic), Pathfinder | Pennsylvania; 1919 |
| Player Backgrounds | 30 | Black Book of B'Nar | SPB1 | 2017 | Embers Design Studios | Pathfinder | |
| Queen of the Cats | 141-142 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder, Dungeons and Dragons | Spain; 1678 |
| Rituals of the Deep Ones | 1-5 | Rituals of the Deep Ones | | 2015 | Necromancers of the Northwest | Pathfinder | |
| Sailing on the Sellen River | 62-73 | Dreams of the Yellow King | PZO90111 | 2016 | Paizo Publishing | Pathfinder | |
| Seeds of Evil | 2-26 | Seeds of Evil | | 2016 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
| Silence from Sommerisk | | Silence from Sommerisk | RPG-A1 | 2019 | Petersen Games | Pathfinder | Fantasy World |
| The Sinister Secret of Peppermarsh | 159-166 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Dungeons and Dragons, Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder | 1951 |
| Stay the Night | 234-240 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Now), Pathfinder, Dungeons and Dragons | Pennsylvania; 2017 |
| Strange Aeons Player's Guide | 3-10 | Strange Aeons Player's Guide | PZO9000-19E | 2016 | Paizo Publishing | Pathfinder | |
 Strange Aeons Poster Maps | | Strange Aeons Poster Map Folio | PZO92100 | 2017 | Paizo Publishing | Pathfinder | |
| Sunken Temple | 8-77 | Sunken Temple | SAM3 | 2017 | Embers Design Studios | Pathfinder | Fantasy World |
| The Sweep and the Raven | 145-147 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Strange Aeons) [13th to 15th C], Pathfinder, Dungeons and Dragons | Spain; 1679 |
| Symphony of Madness | 74-79 | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder | |
| Talismans of Hope | 133-136 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Pathfinder, Dungeons and Dragons, Call of Cthulhu (Strange Aeons) [13th to 15th C] | Spain; 1677 |
| Temple of Dagon | 4-21 | Temple of Dagon | | 2021 | Necromancer Games | Pathfinder | Fantasy World |
| Thirst For Knowledge | | Thirst for Knowledge | RR 3 | 2018 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
| Thrushmoor | 62-67 | The Thrushmoor Terror | PZO90110 | 2016 | Paizo Publishing | Pathfinder | |
| The Thrushmoor Terror | 4-55 | The Thrushmoor Terror | PZO90110 | 2016 | Paizo Publishing | Pathfinder | Fantasy World |
| The Tomb of the Winds | 74-79 | What Grows Within | PZO90113 | 2016 | Paizo Publishing | Pathfinder | |
| The Tome of the Dead | 207-211 | The Dread House | HDG8000 | 2017 | Hammerdog Games | Call of Cthulhu (Classic), Pathfinder, Dungeons and Dragons | Pennsylvania; 1926 |
| The Tower in Darkness | 74-79 | Dreams of the Yellow King | PZO90111 | 2016 | Paizo Publishing | Pathfinder | |
| Tower of Hidden Doors | 2-18 | Tower of Hidden Doors | | 2016 | Wayward Rogues Publishing | Pathfinder | Fantasy World |
| The Town of Brighton | 3-9 | The Town of Brighton | | 2015 | Wayward Rogues Publishing | Pathfinder | |
| Undead | | Undead | | 2016 | Epic Level NPC | Pathfinder | |
| Unspeakable Cults: Azathoth | 3-25 | Unspeakable Cults: Azathoth | UC001 | 2019 | d20pfsrd.com Publishing | Pathfinder | |
| Vampire's Flesh | | Vampire's Flesh | | 2016 | Epic Level NPC | Pathfinder | |
| Void-Touched: Warped Flesh and Twisted Minds | 17- | Midgard and Mythos | KP-Warlock-5E-1-Mythos | 2018 | Kobold Press | Pathfinder | |
| What Grows Within | 4-55 | What Grows Within | PZO90113 | 2016 | Paizo Publishing | Pathfinder | Fantasy World |
| The Whisper Out of Time | 4-55 | The Whisper Out of Time | PZO90112 | 2016 | Paizo Publishing | Pathfinder | Fantasy World |
| Whispers of the Dark Mother Players' Guide | 2-10 | Whispers of the Dark Mother Players' Guide | | 2016 | Wayward Rogues Publishing | Pathfinder | |
| Whispers of the Old Ones | | Whispers of the Old Ones | | 2023 | Studio M | Pathfinder | |
| Xhamen-Dor, the Inmost Blot | 62-67 | What Grows Within | PZO90113 | 2016 | Paizo Publishing | Pathfinder | |
