There is an unused shoe monster with a full set of animations stored in the game's memory.

The game's ending differs slightly between the Japanese and North American/European releases of the game. In the Japanese version, defeating the final boss will cut to a sweeping camera shot of the boss exploding, before giving control back to the Chameleon. As the room starts rumbling, a bridge appears that leads to a narrow hallway with a bright white doorway at the end. Going through the door envelops the screen in light, and transitions to the game's end credit sequence. In the North American/European version, this part of the ending was cut. Defeating the boss will instead cause a brief slow-motion effect to play before fading to black and going straight to the end credits sequence.