The game contains a basic ASCII font that is always loaded into the system's VRAM but is never used. It was possibly used for debugging or testing at one point.

There are two Battle Stages that are hidden in the game. Both of these stages use the third Battle Theme, a track that can only be heard through normal play in Battle Stage 4. The official method of accessing these stages is to plug in a Hudson Super Joy Card controller, turn on the turbo-fire feature, and hold X for several seconds. On the other hand, both stages can be accessed using Pro Action Replay codes.