=>Hidden Characters: Go to the Character Select screen and hold [R]. While
holding [R], press L D R X Y A B L D R D X Y A B. Extra fighters will appear
when the game begins. You may have to hold CNTRL I: [R] and enter the rest
of the code on CNTRL II.
=>Boss Endurance Mode: On the Character Select screen, hold [R] and press
CNTRL II: A L Y R X D B U.
=>New Colors: Press [R] on the plane select screen, or hold [R] while choosing