CPU vs. CPU Game
Press Start first to pause gameplay, then press Down, Left, B, and Select. Use Up or Down next to go to the control mode "COMPT" - Player 1 will now be a computer player, making this a CPU-vs-CPU game. This can only be done in 2-Player mode.
Press Up, Left, Down, Right, A, B at the title screen to see the ending.
Contributed By: odino.
At the title screen, press Up + Left + B + Select.
Super Challenge Codes
Enter the Sound Test mode. Point the cursor to the music called "THE CHALLENGE" and press Right + Select + Start. or Left + Select + Start. Each button sequence engages you in a different Super Challenge.
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