Call of Cthulhu RPG ArkhamDescriptionSpecificationsShipping On the streets of Arkham, the threat of the Cthulhu Mythos is ever present. Call of Cthulhu: Arkham is the definitive guide to the signature setting of Call of Cthulhu, and a premium resource for Keepers of Arcane Lore. A sandbox campaign setting for Call of Cthulhu. The history of Arkham and the Miskatonic University. Details of 9 neighborhoods, with over 290 locations, and 80 fully detailed NPCs. New rules and