Enter the adjust settings menu from the main menu. Select the "Miscellaneous" option, and highlight the "Credit Limit" selection. Hold Square + Circle + Triangle + X. The phrase "Free Play" will appear to confirm correct code entry. If the game settings are saved, free play mode will also be included.
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Sixteen credits
Added on
at
Set the credits to nine and start the game using controller two. Immediately press Start on controller one when player two's ship launches. Allow player two's ship to be lost. Player one will now have sixteen credits.
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Unlimited continues (Japanese version)
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at
Press Select during the game over countdown.
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Hidden options
Added on
at
Hold R1 + R2 + L1 + L2 during a game to display a hidden options menu. The screen resolution, position, and other options may be adjusted.
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Power-ups
Added on
at
Find the slightly off color trees that are not initially destroyed by your ship's fire power. They are usually located on the right side of the screen. Approach these trees and keep firing into them until they explode. Capture the pixie that flies out of the explosion. When your ship is destroyed, a group of power-ups will be released.
