Invincibility (except for fuel):
Start the game on any level and fly the plane. Press the Open button, remove the game CD and replace it with any audio CD. A prompt will appear, allowing any audio track from 1-99 to be played. Use L1, L2, R1, and R2 to adjust the volume and the audio track number. The game will pause after the lid is closed before continuing with the selected audio track. Another prompt requesting for the game CD will appear when the current level is completed. An extra picture of the development team will also appear under the "Credits" option if an audio CD is inserted during game play.