Although a joke WAD, the levels show creativity in the use of the restricted space. While the first few levels contain only a small 64x64 room with an exit switch, later levels use many of the different features of the Doom engine, including elevators, keycard-protected doors, rising stairs, moving floors and even a teleporter. In one level, the correct elevator must be selected to retrieve the keycard for the exit door; selecting the wrong elevator causes a barrel to be detonated, killing the player.