Nine continues
 
 Pause the game and press Down(3), X, Circle, X, Circle, Triangle,
 Square, Triangle, Square, Up(3), Left, Right, Left, Right, Left,
 Right. 
 
 Nine planes
 
 Pause the game and press Up, Down, Left, Right, Square(2), Left,
 Right, Square, Circle, Up, Down.
 
 Self-destruct
 
 Pause the game and press Up(2), Down(2), Left, Right, Left, Right, X,
 Circle.