On the Press Start screen, input CROSS then hold L1 + R1 and input DOWN, DOW, RIGHT, UP. The Press Start message will turn green. During gameplay, the following codes and code effects may be input and activated:

Invulnerability ... Hold L1 and input DOWN, UP, DOWN, RIGHT, RIGHT.
Pevensie Kid Life Restore ... Hold L1 and input DOWN, LEFT, LEFT, RIGHT.
Accrue $10,000 ... Hold L1 and input DOWN, LEFT, RIGHT, DOWN.
Clear/skip current stage ... Hold L1 and input DOWN, LEFT, DOWN, LEFT, DOWN, RIGHT, DOWN, RIGHT, UP.
Unlock All Stages ... Hold L1 and input UP, UP, RIGHT, RIGHT, UP, RIGHT, DOWN.

If the code input is correct, the phrase Cheat Activated will appear. All codes may be toggled off by re-entry.