Cthulhu by Gaslight takes the Call of Cthulhu roleplaying game to the fog-shrouded streets of Great Britain and beyond.The 1880s - Victorian England. Mystery and adventure in fog-shrouded streets and alleyways. Secret cabals commit grisly murder, wicked crimes, and pledge to bring about the ruin of civilization - all within the square mile of the City of London.Cthulhu by Gaslight is a stand-alone game, and contains the complete rules for the Call of Cthulhu roleplaying game, including character creation. You do not need a copy of the Call of Cthulhu: Keeper Rulebook or Call of Cthulhu: Starter Set to play. The Cthulhu by Gaslight: Investigators Guide can be enhanced with the Call of Cthulhu roleplaying game as well as the Pulp Cthulhu supplement, both available separately.