Collection: Chaosium

Essential companion for investigators facing cosmic horror and creeping madness. Expanded occupations and skills deepen your descent into Lovecraftian mystery.

The definitive guide to running cosmic horror investigations in Lovecraft's universe. Sanity-shattering encounters await those who dare peek behind reality's veil.

A Celebration of fifty years of Chaosium: the complete Call of Cthulhu experience, beautifully reimagined to mark half a century of horror.

Victorian England, cosmic horror, and the complete Call of Cthulhu rules - all in one book.

The legendary second edition of Call of Cthulhu in a collectible boxed set - timeless and essential.

Guide your players through a Victorian England steeped in cosmic dread with this comprehensive Keeper's resource.

A standalone supplement that turns Call of Cthulhu into a roaring 1930s action serial - with tougher investigators, wilder stunts, and monsters you might actually survive.

Board the most famous train in the world for a two-volume epic that drags investigators from London to Constantinople in pursuit of a shattered relic - and the nightmare surrounding it.

The definitive Call of Cthulhu campaign - a globe-spanning hunt across five interconnected chapters that will take your investigators from New York to Cairo to the jungles of Kenya.

An atmospheric solo Call of Cthulhu adventure that drops you alone into a chilling horror story in the Black Hills, where every choice counts.

Two hardcovers, one complete game - step into the fog-shrouded streets of Victorian London and find out what's lurking in the shadows.