Here are some cheats and tips for the game Afterburner 2.
Level select:
Hold A + B + C and press Start
at the title screen.
Unlimited continues:
Return to the title screen after losing the game. Press Left(3),
B(3), C(3), Start.
Reversed controls:
Hold A + B on controller two and press Start
on controller one.
Additional missiles:
Press one of the following controller actions, depending on
the current level, before meeting the refueling plane:
Level 3, 13, or 16
Press Left + B.
Level 5, 11, or 21
Press Right + B.
Level 9 or 19
Press B.