+10 Muppet Tokens:
At the main menu, press Left, Up, Down, Right, Square, R2, Circle, Square, L2, Circle. If you entered the code correctly, you will hear the sound of a chicken.

+1000 Pick-ups:
At the main menu, press Square, R2, Circle, Left, Up, Down, Right, Square, L2, Circle. If you entered the code correctly, you will hear the sound of a chicken.

All morphs:
At the main menu, press Circle, R2, Circle, Left, Right, R2, Up, Down, Circle, R2. If you entered the code correctly, you will hear the sound of a chicken.

Ballistic chicken weapon:
At the main menu, press Square(2), Circle, Square, Circle(2), Square(2), Circle, Square. If you entered the code correctly, you will hear the sound of a chicken.

Infinite sub-game time:
At the main menu, press Down, L2, R2(2), Up, L1(2), R1, Down, Up. If you entered the code correctly, you will hear the sound of a chicken.

Ninety-nine lives:
At the main menu, press Up(2), Down, Left, Right, Square, Up, Left, Right, Circle. If you entered the code correctly, you will hear the sound of a chicken.

Unlock all gallery items:
At the main menu, press Square, Left, Circle, Right, Down, Up, Square, Down, Circle, Down. If you entered the code correctly, you will hear the sound of a chicken.

Unlock all levels:
At the main menu, press Up(2), Square, Down(2), Circle, Left, Square, Right, Circle. If you entered the code correctly, you will hear the sound of a chicken.

Level select from main menu:
At the main menu, press R2(4), R1, L1(3), R1, R2. If you entered the code correctly, you will hear the sound of a chicken.

Toggle invincibility:
At the main menu, press L2, R2, R1, L1, R2, L2, R2, R1, L1, R2. If you entered the code correctly, you will hear the sound of a chicken.

Toggle debug information:
At the main menu, press Up, Right, R2, Square, Left, R1, Left, Up, Left, L2. If you entered the code correctly, you will hear the sound of a chicken.

Tunnel soak/consecutive level load:
At the main menu, press L2, L1(2), R1, R2(3), Square, Left, Up. If you entered the code correctly, you will hear the sound of a chicken.

Toggle fly cam:
At the main menu, press Square, Left, R2, Up, R1, L2, R1, Up, R2, Up. If you entered the code correctly, you will hear the sound of a chicken.

Alternate ending sequence:
Get a 100% game completion to view an alternate ending sequence.

Easy Muppet coins:
The Muppet coins will reappear in previous levels in the same locations. Simply defeat the previously beaten opponent to spawn the coins again.