Unleash the horrors of the Victorian night, reveal sinister secrets, forbidden lore, and mysteries of the late 19th century at your gaming table.

What's Inside

Cthulhu by Gaslight takes the Call of Cthulhu roleplaying game to the fog-shrouded streets of Great Britain and beyond. This book is designed for Keepers—those who will be running the game.

A World by Gaslight

Extensive advice for bringing the 1890s setting to life, including the Gazetteer of Fear—over 100 locations across Britain and beyond! The book also includes detailed information on villainous organizations and occult societies such as the Secrets of the Hermetic Order of the Golden Dawn.

Gaslight Mechanics

The Cthulhu by Gaslight: Keeper’s Guide includes rules for Monsters and Mythos elements unique to 1890s Britain. Inside, you’ll also find new occult-based skills, tomes, spells, and rules for combat upon the astral plane!

A Complete Experience

Cthulhu by Gaslight is a stand-alone version of Call of Cthulhu. Only the core Cthulhu by Gaslight: Investigator’s Guide and Cthulhu by Gaslight: Keeper’s Guide are required to play!