On the Title screen, hold Left, press A three times, then press Start. This allows you to start your game with 30 ships in reserve, but does not work with Extra Continues code.
On the Title screen, press X quickly until you have nine continues, then press Start. This does not work with the 30 Lives code.
In the Option Mode, when "Game Level" is highlighted, press A quickly until the game mode changes to "ARCADE."
While playing the game, press Start to pause the game. Then press Up, Up, Down, Down, L Button, R Button, L Button, R Button, B, A and Start. You can do this once per stage.
On the "Weapon Select" screen, press Right to go to the "Edit Mode" screen. Then, press X, Y, X, X, Y, Y, X, Y.
While playing the game, press Start to pause the game, and then press Up, Up, Down, Down, Left, Right, Left, Right, B, A and Start.
On the Title screen, hold A. You will see the Intro screen, the Title screen, and then the Demo on Arcade Mode.
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