Select the level of your choice at the 'Main' menu and then once loaded press the Pause/Start button, and enter the following codes to enable the corresponding effect. Note: These codes must be entered quickly otherwise they will not activate.
Big Head:
Enter LB, RB, LT, LT, RB, LB
Developer Mode:
Enter LT, RB, RB, LT, LB, LT, LB, LT, LB
Matrix Mode:
Enter LT, RB, RB, LB, LT, LB
Mini Bike:
Enter LB, LB, LB, LB, LB, RT
Moon Gravity:
Enter LB, LB, LT, LT, RB, RB
Enter the following cheats at the 'Pause' menu to enable the corresponding effect.
Moon Gravity:
Left Bumper, Left Bumper, Left Trigger, Left Trigger, Right bumper, Right Bumper.
Mini Bike:
Left Bumper, Left Bumper, Left Bumper, Left Bumper, Left Bumper, Right Trigger.
Matrix:
Left Trigger, Right Bumper, Right Bumper, Left Bumper, Left Trigger, Left Bumper (must be entered quickly).
Big Head:
Left Bumper, Right Bumper, Left Trigger, Left Trigger, Right Bumper, Left Bumper.