All cheats have to be entered at the "Start Game" screen. A sound will confirm
correct code entry.
If the code does not activate the first time, wait at the main screen until it
switches back to the "START Game" screen and try again. To enter another code,
remain on this screen until the game returns to the "Start Game" screen on its
own.

Unlimited ammunition:
Press BLACK, WHITE, L, R, click RIGHT ANALOG-STICK, click RIGHT ANALOG-STICK,
press Y, X, then press START.

Unlimited turbo:
Press UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, B, A, then press START.

Invincibility:
Click LEFT ANALOG-STICK, click RIGHT ANALOG-STICK, press DOWN, LEFT, DOWN, LEFT,
B, Y, then press START.

All boats:
Press UP, DOWN, LEFT, RIGHT, L, B, X, X, click RIGHT ANALOG-STICK, then press
START.

All levels:
Press X, Y, UP, RIGHT, LEFT, DOWN, UP, DOWN, L, L, then press START.

Blood Ball mode:
Press X, Y, WHITE, BLACK, B, A, LEFT, UP, RIGHT, DOWN, then press START.

Puffer Fish:
Press A, B, BLACK, WHITE, Y, X, click RIGHT ANALOG-STICK, click RIGHT ANALOG-
STICK, click LEFT ANALOG-STICK, click LEFT ANALOG-STICK, then press START.

Rubber duck mode:
Click RIGHT ANALOG-STICK, click LEFT ANALOG-STICK, R, L, BLACK, WHITE, UP, DOWN,
LEFT, RIGHT, then press START.

Import boat mode:
Press Y, B, X, A, L, R, LEFT, RIGHT, click LEFT ANALOG-STICK, click RIGHT
ANALOG-STICK, then press START.

All battle modes:
Press Y, A, X, B, click LEFT ANALOG-STICK, click RIGHT ANALOG-STICK, BLACK,
WHITE, R, R, then press START.