Invincibility: Press Left(2), A, B, C,
Left, Up, Down, A, Right, A
at the title screen.
Information in this section was contributed by cap986p.
Level select: Enter the "Options" menu and play music 10,
15, 6, and 8 in that order. Aero will say "Yipeee!"
to confirm correct code entry. Begin game play, pause, then hold
Down + L + R + A to display the level
select screen.
Information in this section was contributed by meccablue85.
