To unlock concept movie art, place 3rd or better in Class 3, Championship 8.

Activate the following cheats by entering the corresponding sequences of buttons at "Options" > "Enter Code". To disable a code, enter it a second time.

CHEAT FUNCTION - CHEAT CODE
Invincibility - A, B, A, UP, LEFT, DOWN, RIGHT.
Infinite boost - B, A, DOWN, UP, B, A, DOWN.
Overkill - A, MINUS, PLUS, DOWN, UP, PLUS, 1.
Granite car - B, UP, MINUS, PLUS, 1, UP, PLUS.
Monster truck - B, UP, MINUS, 2, B, UP, MINUS.
Last three cars - 1, 2, 1, 2, B, A, PLUS, MINUS.
Aggressive opponents - UP, LEFT, DOWN, RIGHT, UP, LEFT, DOWN.
Passive opponents - UP, RIGHT, DOWN, LEFT, UP, RIGHT, DOWN.
Miniature opponents - B, A, LEFT, DOWN, MINUS, UP, MINUS.
Lower gravity - UP, PLUS, UP, RIGHT, MINUS, UP, MINUS.
High pitched voices - MINUS, UP, MINUS, 2, MINUS, UP, MINUS.
Psychedelic graphics - LEFT, A, RIGHT, DOWN, B, UP, MINUS.

To unlock the Class 4 Mirror Mode races, place 3rd or better in Class 3, Championship 9.

Unlock the following racers by placing 3rd in the corresponding classes and championships:

RACER - CLASS/CHAMPIONSHIP
Booster Mbube - Class 2, Championship 6
Colonel Colon - Class 3, Championship 4
Delila - Class 3, Championship 3
Denise Mobile - Class 3, Championship 6
Esther "Rev" Reddy - Class 3, Championship 7
Gothorm Danneskjblo - Class 3, Championship 2
Grey Ghost - Class 1, Championship 3
Kellie "Gearbox" Kalinkov - Class 2, Championship 4
Mariana Zanja - Class 3, Championship 5
Nitro Venderhoss - Class 2, Championship 5
Pitter Pat - Class 3, Championship 1
Prince Kabala - Class 2, Championship 3
Rosey Blaze - Class 1, Championship 1
Snake Oiler - Class 1, Championship 2
Sonic "Boom Boom" Renaldi - Class 2, Championship 2
Taejo Togokahn - Class 2, Championship 1