Cheat mode
Enter the "Extras" menu, then select the "Cheats" option. Enter one of the following codes to unlock the corresponding cheat option. To toggle a cheat on or off, pause the game, and enter the "Cheats" menu.

All Mini Games
Press Right, Up, Right(2).

Level Select
Press Right, Up, Left, Right, Up, Right.

Unlimited Enchanced Vision
Press Left, Right, Up, Down.

Unlimited Gas Mines
Press Right, Left(2), Up, Down, Right.

Unlimited Ground Pound
Press Right, Up, Right, Up, Left, Down.

Unlimited Invulnerability
Press Down(2), Up, Left.

Unlimited Laser Eyes
Press Left(2), Up, Right.

Unlimited Stealth Camo
Press Left, Down(3).

Unlimited SuperBark
Press Right, Left(2), Up, Down, Up.