Start a fight and intentionally lose. Return to the main menu, select resume, and press Left, X, Down, Up, Right, Left, Up, X. "Level Select Enabled", "Debug Pattern Codes Enabled", and "Zap and Excerciser Enabled" will appear at the bottom of screen to confirm correct entry, and the following functions will be enabled:
- Press L or R to select a stage to play.
- During a fight, press L+R to decrease the opponent's health. The opponent cannot be killed this way, however.
- A Debug Display is added to the top of the screen.
Figure out the contents of the debug display.