• Arcade Mode

Enter sound test option and play the following songs (in order): 7, 7, 7, 7, 9, 3, 10. | [Sent by Matrix]
  • Fast mode

Enter sound test option and play the following songs (in order): 7, 5, 8, 4, 1, 10, 5, 1, 10, 5, 1, 8. | [Sent by Matrix]
  • Maximum HP

Enter sound test option and play the following songs (in order): 3, 7, 3, 5, 1, 8, 2, 1, 9, 8, 4. | [Sent by Matrix]
  • Nine credits

Enter sound test option and play the following songs (in order): 0, 3, 3, 8, 3, 9, 0, 0, 8, 0.
| [Sent by Matrix]

  • Slow mode

Enter sound test option and play the following songs (in order): 0, 0, 0, 0, 0. | [Sent by Matrix]
  • Start at second half of game

Enter sound test option and play the following songs (in order): 1, 6, 0, 10, 5, 2, 10, 3, 8. Game play will begin after powering up with heavy artillery and speed. | [Sent by Matrix]
  • Unlimited ammunition

Pause game play and press II, Left, II, Up, I, Right, I. | [Sent by Matrix]
  • Unlimited bombs

Pause game play and press I, II, Left, I, II, Up, I, Down, I, II, Select, Up, Down. | [Sent by Matrix]
  • Unlimited credits

Enter sound test option and play the following songs (in order): 3, 4, 3, 8, 0, 1, 4, 1, 14, 14. | [Sent by Matrix]