The game takes place within a castle in which the player must seek out the "Golden Key of ACG" through unlocking doors and avoiding enemies. It was Ultimate's second game to require 48K of RAM; most of their previous games for the Spectrum ran on unexpanded 16K models. It was re released for Xbox One as part of the Rare Replay Collection.

The game takes place within a castle in which the player must seek out the "Golden Key of ACG" through unlocking doors and avoiding enemies. It was Ultimate's second game to require 48K of RAM; most of their previous games for the Spectrum ran on unexpanded 16K models. It was re released for Xbox One as part of the Rare Replay Collection.