View FMV sequences
Press [Z], [A], [Z], [A], [B], [A], [B], [Y], [C], [A], [C], [A] at the title screen, while "Press Start Button" is displayed. Press [A] to skip to the next FMV sequence.
Refuel and reload
Press [L], [A], [Z], [Y], [A], [Down]x2 at the title screen, while "Press Start Button" is displayed. The phrase "There she is, beans and bullets are on the way" will be spoken to confirm correct code entry. Press [Start] during game play to refuel and reload.
Level skip
Hold [C] + [B] + [A] + [Up] + [L] (in that sequence) at the title screen, while "Press Start Button" is displayed. Keep the buttons held, and release them individually in this order: [A], [C], [L], [Up]. The phrase "Blackhole engaged" will be spoken to confirm correct code entry. Hold [A] + [B] + [C] + [Up] + [L] during game play to skip to the next level. Hold [X] + [Y] + [Z] + [Up] + [L] during game play to return to the previous level.
Invincibility
Hold [A] + [B] + [C] (in that sequence) at the title screen, while "Press Start Button" is displayed. Keep the buttons held, and release them individually in this order [C], [B], [A]. Next, press [B], [A], [B], [Y]. Hold [X], hold [Up], hold [Down], release [X], release [Down]. The phrase "You are on the wrong team" will be spoken to confirm correct code entry.
In-game reset
Hold [A] + [B] + [C] and press [Start] during game play.
Nuclear bomb
Press [Up]x3, [A], [Z], [A], [Down]x3 at the title screen, while "Press Start Button" is displayed. The phrase "You are fooling with the wrong person" will be spoken to confirm correct code entry.