 The film has several explicit references to the AD&D game. A map  during the opening credits contains the name "Yeenoghu", a demon  lord from the game, and another demon lord from the game, "Jubilex",  is mentioned by the characters several times. Also, several  references contain the names of AD&D adventure modules (published  scenarios). Berek mentions that Dorian helped him in the Ghost Tower  of Inverness, a reference to module of the same name (C2). Nim asks  Lux what happened to her brother at the "Barrier Peaks", a reference  to the module "Expedition to the Barrier Peaks" (S3). Lux makes  reference to the Shrine of the Kuo