All our Prophecy Advance codes are out now. Here they are in one place for you to try. To use these cheats, press the button combinations at the Prophecy splash screen with the flashing "Press Start" text.
If the cheat is entered correctly, the screen will flash white briefly.
God Mode (invulnerable):
Up, Down, A, B, Left, Right, L, L, R, R, B, A
Unlock Flight History (all missions available from Flight History terminal):
Up, Up, L, R, Down, Down, A, A, B, A
Unlock alien ships in tactical database:
R, L, A, A, A, B, Up, Left, Down, Right, Up, A