Invincibility:
Quickly press Left, Right, B, C(2), Start at the title screen.

Invincible armor:
Quickly press Down, C(2), A, Start at the title screen.

Unlimited ammunition:
Quickly press B(3), C, Start at the title screen.

Unlimited 120mm cannon ammunition:
Quickly press B, C(2), C + Start at the title screen.

Unlimited jump rockets:
Quickly press Up, Right, Down, Left, Z, Start at the title screen.

No targeting squares:
Quickly press Left, Right, C, A, Start at the title screen.

No radar:
Quickly press B(3), Down, C, Start at the title screen.

No auto-centering:
Quickly press B(3), Up, C, Start at the title screen. The turret will no longer automatically return to the center position.

Increased difficulty:
Quickly press Down, C(2), A, Start at the title screen. Enemies will shoot more aggressively.

Double hit points:
Quickly press X, Y, Z, Up, Down, Start at the title screen. Your initial and maximum hit points will be doubled.

Unlimited jumps:
Quickly press Up, Right, Down, Left, Z, Start at the title screen. The jump meter will be disabled allowing unlimited jump energy.

Adjust window height:
Quickly press Down, Left, C(2), Start at the title screen. During game play press the following buttons on controller two to adjust the window height: Z to heighten, C to shorten, or A to reset.

Stage select:
Quickly press Y(2), A, Y(2), Start at the title screen.

Ramming attack:
Quickly press Right(2), B, C, A, Start at the title screen. Ram your opponents to damage them. Note: You will also receive damage from the attack.

View ending sequence:
Press Down, Up, Right, A, Left, Start at the title screen, then select the "Main Game" option.

Display debug data:
Press Right(2), X, B, A, L(3), R on controller two. Press Y on controller two to select three different settings. Press C on controller two rapidly on stages 1 and 10 to spin the windmills.