• Alter globe speed and direction

Hold 4 + 6 at the mission selection screen. | [Sent by DayleJ]
  • Alternate "Ammo depleted" notice

Press C + 4 + 8 at the mission selection screen. | [Sent by DayleJ]
  • Alternate ground appearance

Hold Up + A + B + C + 3 during game play. | [Sent by DayleJ]
  • Bonus lives

Hold 3 + 6 + 9 + # at the mission selection screen. A sound will confirm correct code entry. Up to nine extra lives may be selected. | [Sent by DayleJ]

  • Debug mode

Press Up + A + B + C + 6 during game play. The top right number indicates the current frame rate. | [Sent by DayleJ]
  • Display alternate monitor frame

Press Right + C + 1 + 4 + 5 at the mission selection screen. | [Sent by DayleJ]
  • Level skip

Hold 2 + 4 + 6 + 7 + 8 + 9 at the mission selection screen. A sound will confirm correct code entry. | [Sent by DayleJ]
  • Music select

Press Up + A + B + C + 0 during game play. | [Sent by DayleJ]
  • Switch day and night

Hold Up + A + B + C + 7 during game play. | [Sent by DayleJ]
  • Unlimited weapons, energy, and shields

Hold Down + 3 + 4 + 6 + 7 at the mission selection screen. A sound will confirm correct code entry. | [Sent by DayleJ]