Invincibility: Pause game play, then press A, Y, A,
Y, L, R, L, R, B, X,
B, X, B, X.
Level select: Press Up, Down, Up, Down,
X, R(2), Select, Select at the character
selection screen. A sound will confirm correct code entry. Select
a character and the level select menu will appear before the game
starts.
Difficulty 8: Press Up(2), Down(2), Left, Right,
Left, Right, B, A at the option screen.
Suicide: Pause game play, then press Up(2), Down(2),
Left, Right, Left, Right, B,
A, Start.
Additional continue: Pause game play, then press Up(3), Down(3),
Left, Right, Left, Right, Left,
Right, B, A, B, A, X,
Y, X, Y.
Sound test: Press Up(6), Right(6), Select(6),
Down(6), Left(6) at the title screen.
