Call of Cthulhu – Keeper Rulebook

You know the truth. Now you must keep it hidden.

The Call of Cthulhu Keeper Rulebook is the definitive guide for Game Masters (Keepers) running the world’s most acclaimed horror roleplaying game. Based on the works of H.P. Lovecraft, this 7th Edition hardcover rulebook gives you all the tools you need to run unforgettable investigations into cosmic horror, madness, and the unknowable.

Pair it with the Investigator Handbook for maximum immersion

From terrifying Mythos creatures and ancient tomes to sanity-shattering secrets, this book walks you through the creation of chilling scenarios, eldritch locations, and disturbing antagonists. Whether you’re crafting a single session or an extended campaign, the Keeper Rulebook gives you full control over every haunting detail.

Inside this 272-page full-color hardcover, you’ll find:

• Full rules for running Call of Cthulhu 7th Edition
• Guidance on creating and managing scenarios
• Mythos creatures, magic, sanity mechanics, and investigations
• Background information on the 1920s and modern settings

• A full introductory adventure: Amidst the Ancient Trees