Pause the game and press Up, Up, Down, Down, L, R, L, R, B, then A. When you
unpause the game you should have full power-ups. This code only works a few
times a game. also...
Pause the game and press Up, Up, Down, Down, Left, Right, Left, Right, B, A.
When you unpause the game you'll have full power-ups for a few short seconds
then you'll self-destruct.
Thanks to Revolution reader Jim Brodhagen II!