Reach each goal once in any mode to unlock a new tuning option. Tuning options can be enabled via the touch screen in either Old or New modes and using them enters you into a seperate high score table for each. Reaching all five once unlocks the Arcade Version, which runs the game at 30FPS with minor pop-in to closer emulate the original arcade cabinets. Arcade can be played in both Old or New mode and has it's own high score table for both.

Unlockable	How to unlock
Arcade Mode	Reach all five Goals among all modes.
Cornering (Tighter Turning)	Reach any Goal in any mode.
Engine (Higher Top Speed)	Reach any three different Goals among all modes.
Fender (Quicker Recovery)	Reach any two different Goals among all modes.
Tires (Maintain Speed While Off-Road)	Reach any four different Goals among all modes.