Enter the code while the game is paused. If you make a mistake, press the R button to start over.

Code	Effect
B, A, B, Y, R	Level clear.
B, Y, X, B, R	Toggle collision detection box.
X, A, Y, Y, R	Infinite lives.
X, B, Y, A, R	Max lives and inventory.
X, Y, B, X, R	Defeat enemies with 1 hit.
Y, B, Y, A, R	Stage clear.