Here are some cheats and tips for the game SpongeBob SquarePants: Creature From The Krusty Krab.
Level select:
Pause game play, then hold L + R and press Up, Down, Left, Right.
Untouchable:
Pause game play, then hold L + R and press Left(2), Right(2).
No pants:
Pause game play, then hold L + R and press Right, Up, Down(2).
Temporary shield:
Pause game play, then hold L + R and press B, A(2), B.