At the main menu, hold L1 and R1, then press Triangle, Square, Circle, Square, Circle, Left, Right, and Up. You should hear a sound effect confirming that you entered the code correctly. Then during gameplay press L2 and R2 to bring up a level select menu.
Contributed By: shnickshnick.
To view the alternate ending, collect all 20 Blue Gems during the game, then complete it.
Contributed By: DBM11085.
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