Unlimited health: Press Start to pause game play, then press L(2),
Left, R, Right, R, Up, Down,
Left, R, Right, L.
Level select: Press Start to pause game play, then press Left,
Down, L(2), Up, Down, R, Right,
Up, Right, L, R.
All weapons and full ammunition: Press Start to pause game play, then press L,
R, Left, R, L, Right, L,
R, L, R, Left, R.
500 Credits: Press Start to pause game play, then press Right,
Left, Right, Left, L, R, Up(2),
R(2), L(2). Note: This can only be done once per
game, but can be combined with the other codes that have a similar
effect.
1000 Credits: Press Start to pause game play, then press Up,
Down, Up, Down, Left, Right,
L, R, L, R(2), L. Note: This
can only be done once per game, but can be combined with the other
codes that have a similar effect.
5000 Credits: Press Start to pause game play, then press Up,
Right, Down, Left, L(2), Right,
Left, R(2), L(2). Note: This can only be
done once per game, but can be combined with the other codes that
have a similar effect.
