Continue game play:


Press A, B(2), A at the game over screen

after losing during one of the first three levels of the game.



Level select:


Quickly press Up, Down, A(2), B,

Left, Right, A, B, Up, A,

Down, Right(2), Left, B, Up,

Left, A, Right, B, Left, Right,

A, Left, Up, A, Down, A,

Right, Left, A, Start at the title

screen.  The phrase "Stage 1" will appear next to the

airplane landing screen to confirm correct code entry.  Press

A or B to change the starting level.



Double tank:


Position both players on a tank and press A on both

controllers.



Double helicopter:


Position both players on a helicopter and press A +

B on both controllers.