Options menu: Press Start + A at the Sega logo. Set
the number of ships to 0 for 99 ships. Various songs can also
be played from this screen depending on which difficulty level
was used to previously complete the game.
Weapon select: Pause game play, then press Up, Right,
A, Down, Right, A, Down, Right,
A, C, Left, Up, B, Up.
Information in this section was contributed by Terry994104.
