Eldritch

Eldritch Horror refers to a creature or entity that is unfathomable, beyond human comprehension, and often associated with the Cthulhu Mythos. Eldritch Horrors are typically ancient, immensely powerful, and exist beyond the limits of time and space.

Adventures

Chaosium

CoC7e

Horror on the Orient Express – Cthulhu Campaign

Ride Europe’s most infamous rails in Horror on the Orient Express, a prestige Call of Cthulhu campaign of luxury, dread, and relentless pursuit.

Chaosium

CoC7e

Reign of Terror – Cthulhu Campaign

Reign of Terror is a two-part historical Call of Cthulhu campaign set amid the French Revolution, blending political upheaval with Mythos horror.

Ghostfire Gaming

D&D 5e

Dungeons of Drakkenheim – D&D 5E Adventure

A dark fantasy campaign of ruined cities, cosmic horrors, and lost legacies. Dungeons of Drakkenheim invites players to explore a shattered metropolis of monsters, factions, and secrets.

Chaosium

CoC7e

Down Darker Trails – Cthulhu Setting & Scenarios

Down Darker Trails is a Call of Cthulhu setting book that brings cosmic horror to the mythic Old West. Also includes two complete scenarios: Scanlon’s Daughter & Something From Down There

Chaosium

CoC7e

Starter Set - Call of Cthulhu

The Call of Cthulhu Starter Set is the perfect introduction to the world’s greatest horror role-playing game. Packed with rules, dice, and classic adventures.

Chaosium

CoC7e

Cthulhu: Masks of Nyarlathotep

A globe-spanning, apocalyptic campaign of horror and mystery. Unravel cult plots, face cosmic threats, and save the world. If you can survive the madness.

Chaosium

CoC7e

Cthulhu: Dead Light

Dead Light is a short, encounter-based scenario for Call of Cthulhu, set in the Arkham countryside during the 1920s.

Chaosium

CoC7e

Cthulhu: Saturnine Chalice

An invitation leads to a strange house, a haunting presence, and a descent into Dreamlands horror in this gaslight-era one-shot.

Chaosium

CoC7e

Cthulhu: Quick-Start Rules & the Haunting

Investigators are hired to discover the truth about the Corbitt House in this legendary introductory scenario for Call of Cthulhu 7e, celebrated by Keepers and Investigators for years.

Chaosium

CoC7e

Cthulhu: Keeper Rulebook

Master mind-shattering horror in this 40th anniversary edition of the Keeper Rulebook. Everything needed to run Call of Cthulhu 7e: rules, Mythos lore, monsters, magic, and adventures.

Chaosium

CoC7e

Cthulhu: Mythos Bundle

Start your investigation with the core rulebooks.

Books

Chaosium

CoC7e

Horror on the Orient Express – Cthulhu Campaign

Ride Europe’s most infamous rails in Horror on the Orient Express, a prestige Call of Cthulhu campaign of luxury, dread, and relentless pursuit.

Chaosium

CoC7e

Reign of Terror – Cthulhu Campaign

Reign of Terror is a two-part historical Call of Cthulhu campaign set amid the French Revolution, blending political upheaval with Mythos horror.

Ghostfire Gaming

D&D 5e

Dungeons of Drakkenheim – D&D 5E Adventure

A dark fantasy campaign of ruined cities, cosmic horrors, and lost legacies. Dungeons of Drakkenheim invites players to explore a shattered metropolis of monsters, factions, and secrets.

Chaosium

CoC7e

Down Darker Trails – Cthulhu Setting & Scenarios

Down Darker Trails is a Call of Cthulhu setting book that brings cosmic horror to the mythic Old West. Also includes two complete scenarios: Scanlon’s Daughter & Something From Down There

Chaosium

CoC7e

Alone Againsts Bundle – Cthulhu Solo Adventures

Explore five solo Call of Cthulhu adventures in the Alone Against the World Bundle. Face cosmic horror in Flames, Dark, Frost, Tide, and Static without a Keeper.

Chaosium

CoC7e

Alone Against the Static – Cthulhu Solo Scenario

Face unspeakable horror in the Black Hills with Alone Against the Static, a 1990s Call of Cthulhu solo adventure beyond signal range.

Chaosium

CoC7e

Starter Set - Call of Cthulhu

The Call of Cthulhu Starter Set is the perfect introduction to the world’s greatest horror role-playing game. Packed with rules, dice, and classic adventures.

Chaosium

CoC7e

Cthulhu: Masks of Nyarlathotep

A globe-spanning, apocalyptic campaign of horror and mystery. Unravel cult plots, face cosmic threats, and save the world. If you can survive the madness.

Cthulhu Reborn

Scion

Apocthulhu SRD

Survive a post-apocalyptic wasteland haunted by cosmic horror. Use this open SRD to run bleak one-shots or full campaigns inspired by Lovecraftian end-times.

Chaosium

CoC7e

Cthulhu: Through the Ages

Investigate cosmic horror across time: play Cthulhu in the Dark Ages, Victorian London, Ancient Rome, the Future, and beyond with this system-bridging sourcebook for every era.

Chaosium

CoC7e

Cthulhu: Dead Light

Dead Light is a short, encounter-based scenario for Call of Cthulhu, set in the Arkham countryside during the 1920s.

Chaosium

CoC7e

Cthulhu: Saturnine Chalice

An invitation leads to a strange house, a haunting presence, and a descent into Dreamlands horror in this gaslight-era one-shot.

Chaosium

CoC7e

Cthulhu: Quick-Start Rules & the Haunting

Investigators are hired to discover the truth about the Corbitt House in this legendary introductory scenario for Call of Cthulhu 7e, celebrated by Keepers and Investigators for years.

Chaosium

CoC7e

Cthulhu: Dark Ages Setting Guide

Uncover Mythos horror in the year 1000 AD. This standalone Call of Cthulhu variant takes investigators into the medieval past, where ignorance offers no protection from ancient terror.

Chaosium

CoC7e

Cthulhu: Pulp Cthulhu Rules

Punch evil cultists, leap from burning zeppelins, and defy the Mythos with grit and guns. Add this supplement to any 7e campaign to shift the tone toward high-stakes, fast-paced adventure.

Chaosium

CoC7e

Cthulhu: Keeper Rulebook

Master mind-shattering horror in this 40th anniversary edition of the Keeper Rulebook. Everything needed to run Call of Cthulhu 7e: rules, Mythos lore, monsters, magic, and adventures.

Chaosium

CoC7e

Cthulhu: Grand Grimoire of Mythos Magic

Harness over 550 Mythos spells of forbidden power in this eldritch tome. A definitive source of magic for Call of Cthulhu 7e, featuring Deeper Magic, Dreamlands rites, and sorcerous secrets.

Chaosium

CoC7e

Cthulhu: Mythos Bundle

Start your investigation with the core rulebooks.

Ghostfire Gaming

D&D 5e

Sebastian Crowe’s Guide to Drakkenheim Expansion

Unleash new classes, spells, and horrors in the world of Drakkenheim. Sebastian Crowe’s Guide to Drakkenheim expands your D&D 5E experience with dark magic, alchemy, and forbidden knowledge.

Chaosium

CoC7e

Alone Against the Tide – Cthulhu Solo Scenario

Investigate Esbury’s eerie mysteries in Alone Against the Tide, a Call of Cthulhu solo adventure where your choices shape fate.

Chaosium

CoC7e

Cthulhu: Investigator Handbook

This essential guide for Call of Cthulhu players allows you to create compelling characters and explore the 1920s. It includes expanded rules, occupations, skills, equipment, and historical context.

Chaosium

CoC7e

Cthulhu: Malleus Monstrorum - Cthulhu Mythos Bestiary

This two-volume collection is packed with ideas, concepts, and insights to immerse your scenarios and campaigns deep in the heart of the Cthulhu Mythos.

Chaosium

CoC7e

Alone Against the Flames – Cthulhu Solo Scenario

Begin your journey into Call of Cthulhu with Alone Against the Flames, a solo horror adventure that teaches the rules as you play.

Chaosium

CoC7e

Cthulhu: Arkham Setting Guide

Explore the twisted history of Arkham, Massachusetts: home to Miskatonic University and secrets best left buried. A richly detailed setting guide for Call of Cthulhu 7e campaigns.

Chaosium

CoC7e

Alone Against the Dark – Cthulhu Solo Scenario

Travel the globe in Alone Against the Dark, a Call of Cthulhu solo campaign of mystery, survival, and cosmic horror.

Chaosium

CoC7e

Alone Against the Frost – Cthulhu Solo Scenario

Brave Canada’s frozen wilderness in Alone Against the Frost, a Call of Cthulhu solo adventure of survival, sanity, and the horrors of the Mythos.

Chaosium

CoC7e

Cthulhu: Cults of Cthulhu

Explore Cthulhu’s worshippers through time with this definitive guide. Create your own cults, unravel conspiracies, and run three dark scenarios for Call of Cthulhu 7e.

Chaosium

CoC7e

Cthulhu: Basic Rules

Play Call of Cthulhu for the first time with this Quick-Start Rules guide.

Join the adventure

Quickly create a campaign, invite your friends, and start playing right away with hundreds of scenes, maps, and sounds at your fingertips.