CRC Test:

To view a CRC test easter egg, hold Up + Left + A + B on Player 2's controller and press Reset.

 

Invincible:

Turn on the game and Reset the game 77 times. Then while playing, pause the game and press Up, Up, Down, Down, Left, Right, Left, Right, B, A and Start. If done right, you'll be invincible.

 

Re-Energize:

When low on energy, press Start to pause the game, then press Up, Up, Down, Down, Left, Right, Left, Right, B and A. Then press Start to unpause the game, and your energy meter will be filled. You can do this once per game.

 

Round Select:

Turn on the game and Reset the game 25 times. Then at the title screen press Up, Up, Down, Down, Left, Right, Left, Right and Start. If done right, a stage select menu should appear.

 

Sound Test:

While holding Up, A and B, press Reset on the Control Deck. A screen will appear showing the sound selections in the game. Now you can press Up or Down to select a sound and B to hear it.