Select the "Extras" options at the main menu, then enter one of the following codes. The codes only affect Quick Play mode.
Two player co-op mode:
Enter CHUWAY as a code.

Stamina disabled:
Enter NOTTIRED as a code.

Ball trails always on:
Enter ONFIRE as a code.

Beach ball:
Enter BOUNCY as a code.

Double unleash icons:
Enter PIPPED as a code.

Super clash mode:
Enter CLASHY as a code

Super unleash clash mode:
Enter BIGDOGS as a code.

Win in campaign mode:
Enter CHAMPS as a code. In campaign mode, highlight a team but do not select it. Stay on the menu and press Square, Square, Triangle to instantly win against the selected team.