• Bonus bomb

Collect ten yellow stars. | [Sent by Neto]
  • Bonus credits

Hold Right and repeatedly tap II when the helicopter is landing at the title screen. | [Sent by Neto]
  • Guided missiles

Hold Select when collecting the yellow power-ups. | [Sent by Neto]
  • Three extra helicopters

Immediately fly to the bottom left corner of the screen when game play begins. Drop a bomb when your ship can not move. A sound will confirm correct code entry.
| [Sent by Neto]