At the title screen, hold Up and press Run.
Contributed By: ReyVGM.
Just stand still (don't move) and don't shoot in the bonus stage.
Contributed By: Xeon.
Hold Up and press Run at the title screen. The capsule on the ship will turn red instead of blue to confirm code entry. Shoot the last target on the first level to capture the red capsule and power-up to a triple ship.
Contributed By: Mr T Virus.
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