Nightmare is a horror video board game released in 1991 by A Couple 'A Cowboys and J. W. Spear & Sons as part of the Atmosfear series. The game is set in a place known as "The Other Side". This place has six Harbingers, each of whom has authority over a Province. To play the game, each player adopts the persona of one of the Harbingers: Gevaudan the werewolf; Hellin the poltergeist; Khufu the mummy; Baron Samedi the zombie; Anne de Chantraine the witch, and Elizabeth Bathory the vampire. The final character in the game is the Gatekeeper, whose job is to ensure that the other characters do not escape from The Other Side.