What's Inside

The Keeper Rulebook, Investigator Handbook, and Keeper Screen Pack together in a premium collector’s slipcase, with all new cover art celebrating the 50th anniversary of Chaosium.

Playing the role of steadfast investigators, you travel to strange and dangerous places, uncover foul plots, and stand against the terrors of the Cthulhu Mythos. You encounter sanity-blasting entities, monsters, and insane cultists. Within strange and forgotten tomes of lore you discover revelations that humanity was not meant to know.

The Keeper Rulebook

This book contains the core rules, background, guidance, spells, and monsters of the game. It is everything you need for Call of Cthulhu at your fingertips, and will enhance all of your games. The Keeper Rulebook is intended for use by the Keeper of Arcane Lore—the Game Master who will present the scenarios to the other players.

The Keeper Rulebook is a veritable grimoire of rules and inspiration to make your Call of Cthulhu games the absolute best they can be. Within, you’ll find: A bestiary of Mythos entities to pepper your Call of Cthulhu scenarios and campaigns; two complete scenarios, handouts and pregenerated characters; full rules for the Sanity system that sets Call of Cthulhu apart from other horror games, and much more!

The Investigator Handbook

The book contains expanded rules for creating player characters, a wealth of over 100 occupations and skill descriptions, as well as guidance on getting the most from the game. It introduces a range of organizations for your investigator to belong to, detailed information about the classic 1920s setting, and advice for all budding and experienced players alike.

Within, you’ll find: Full rules for creating unique characters for Call of Cthulhu; a chapter on advice for both roleplaying and Call of Cthulhu in general will benefit new and returning players; a primer on 1920’s New England, the signature setting of Call of Cthulhu, and much more!

The Keeper Screen Pack

The Keeper’s Screen Pack enhances your games of Call of Cthulhu with scenarios, reference tables, and maps that increase the flow of play, and help to immerse you in the horror of the Mythos.

Inside are two ready-to-play scenarios, each set in 1920s New England; A set of large, full-color maps featuring the world, Lovecraft Country, and the city of Arkham itself; and of course a 34’ Keeper Screen evocative artwork facing the players, while the rear of the screen summarizes important mechanics, statistics, and charts.

It may not be possible to ship very heavy items outside of the Mainland UK.
Released: 16 April 2026