On the streets of Arkham, the threat of the Cthulhu Mythos is ever-present. A quiet town in New England-home to the prestigious Miskatonic University-Arkham's underbelly hides criminals, speakcasies, and a witch-cursed history. Arkham is the definitive guide to the signature setting of Call of Cthulhu. A sandbox campaign setting for Call of Cthulhu. The history of Arkham and the Miskatonic University. Details of 9 neighborhoods, with over 290 locations described. New rules and skills for Arkham investigators. More than 80 fully-detailed NPCs. Gossip and rumors to use as scenario seeds for original stories. Street and neighborhood maps, as well as numerous floorplans of key locations. Two Arkham city map posters-one for players, and one marked with information for the Keeper. A poster-sized newspaper prop of the Arkham Advertiser. For Mature Readers: contains mature themes and is intended for mature players. This supplement is part of the Arkham Unveiled line and is designed for use with both the Call of Cthulhu roleplaying game and the Pulp Cthulhu supplement, both available separately. What is Call of Cthulhu? Call of Cthulhu is Chaosium's roleplaying game of mystery and horror set within the world of the Cthulhu Mythos. Players take on the role of investigators of the strange, arcane, and unknown: regular people making a stand despite the cost to body and soul. Against weird cults, bizarre magic, and otherworldly monsters, only they can save humanity and the world from the terrors from beyond.