This 80-page softcover is the Batman sourcebook for the DC Heroes role-playing game. DC Heroes is the superhero role-playing game based on the characters appearing in DC Comics and was published by Mayfair Games. This includes two double-sided fold-out maps - one showing the Wayne Foundation building, with Wayne Manor on the other side, the other showing the Batcave under the Wayne Foundation on one side, and the Batcave under Wayne Manor on the other side.