Despite previous claims that id would not be modifying the versions of Doom or Doom II included with Doom 3: BFG Edition, the secret levels have been heavily censored; all Nazi imagery, including swastikas and portraits of Adolf Hitler, have been removed, and most disappointingly, all Wolfenstein SS enemies have been replaced with standard Former Humans. Additionally, because of this removal of the references to the original game, the level has been renamed "Keen", as the cameo appearance of that character has not been removed. This also seems to be the case in the so-called Doom: Classic Complete package on Steam. Also, on the BFG Edition, the music track "The Ultimate Challenge", has been switched out with the track "DOOM".