Code - Result:
BONES - Patrick gets thinner
BRAIN - See SpongeBob's thoughts
BUNRUN - Patrick's rocket is colored purple
DUCKGUN - SpongeBob's gun type changes
EMCSQR - Infinite time for driving stages
FLAMES - Changes SpongeBob's car
GASSY - Infinite fuel for flying stages
GUDGEON - Unlock every level
HOTROD - Unlock alternate vehicle
HOVER - Hovercars change type
HYPCAR - SpongeBob's car type changes
INVENT - Plankton changes appearance
KRABBY - Skinny SpongeBob
LASER - Changes laser colors
PANTS - SpongeBob gets smaller
PATRICK - New skin for Patrick
PILOT - New SpongeBob Costume
PORKPIE - All bonus games unlocked
ROBOT - Changes Plankton type
ROCFISH - 30,000 Coins
ROCKET - Rockets change type
SAFARI - Patrick wears his safari outfit
SCOOTLES - All Sleepy Seeds are acquired
SPACE - Unlock alternate ship
SPIN - Changes Patrick's attack colors
SPONGE - SpongeBob becomes punky
TISSUE - Sleepy Seed Detector becomes active
VIGOR - Infinite health for platforming stages