Expert mode...
	Full pause screen...
	In-game reset...
	New shooting weapons...
	Replay mode...
	Unlimited credits...

Successfully complete the game under the arcade or higher difficulty setting to play more difficult levels.

Pause game play, then press X + Y.

Pause game play, then hold A + B + X +Y and press Start.

Collect all the objects you see after the planes explode.

Successfully complete the game to unlock the "Replay" option at the main menu. Select it to watch the game auto-play.

The game increases the number of available credits each time that it is restarted. If played enough times, your available credits will be unlimited.