Cheat Mode
Enter the following codes at the "Credits" screen:
[Triangle], [Triangle], [Triangle], [Triangle], [X], [X], [X], [X], [Square], [Start] - Disable Ship Inertia (Does not work in Version 1.0).
[Down], [Left], [Up], [Right], [Triangle], [Triangle], [X], [X], [Square], [Start] - Full Overdrive.
[Triangle], [X], [Square], [Left], [Right], [Left], [Left], [Up], [Square], [Start] - High Speed.
[Up], [Up], [Down], [Down], [Left], [Right], [Left], [Right], [Square], [Start] - Invincibility.
[Left], [Right], [Left], [Right], [X], [Right], [Triangle], [Triangle], [Square], [Start] - Maximum Cash.
[X], [Triangle], [Square], [Right], [Left], [Right], [Right], [Square], [Square], [Start] - Slow Motion.