ID software originally held a contest where, if a player completed the insane secret maze in Episode 2, Floor 8, they would find a sprite that said "Call Apogee say 'AARDWOLF.'" The contest was cancelled because map editors were made for the game that allowed players to navigate through the maze much easier, trivializing the contest. In later versions, a certain part of the maze was blocked off and/or replaced the sign with a pile of bones.