Debug mode When "Push Start Button" is flashing on the opening screen, hold Z and press Right, Left, Up, Down, A, B, Start. Then, a debug menu that allows stage select and other effects will appear. Level select When "Push Start Button" is flashing on the opening screen, press C-Up(7). Power chopper While you are at the main menu, hold L + R + Z and press Start before selecting a chopper. Shoot down the President While playing a game, press Z + C-Up + C-Down, then launch a homing cluster at your opponent. If it hits, you will see the president jump out of the plane. Alien weapon Complete level 7 on the expert difficulty setting. Then, fight on the moon to purchase the alien homing plasma weapon. King 10 Locate King 10 in level 7, defeat him, then complete the mission. Stingray Locate Stingray in level 7, defeat him, then complete the mission. Chopper preview While you are at the chopper selection screen, highlight a chopper, then press L to display the statistics screen. Press the Analog-stick to rotate the model of the chopper.