When the copyright notice appears on the title screen, press Up, Down(2), Up, R2. Now a level select screen will appear. Press R1 or R2 to select a level. Press L1 + L2 + Square during game play to destroy all ships (friendly and otherwise) on the display.
|Infinite Lasers||801E6A8C 03FC|
|Infinite Energy--Break Point Code||80107F50 0000|
|Infinite IMREC Missiles||801E6C08 0009|
|Infinite Decoys||801E6AA0 0018|
|Infinite Fuel||801E5A3C EE00|
Note: If some codes don't work, press Start + Select to end your game, and then restart the game.