Enter these codes while the game is paused.

Invisibility: hold L1+R1 and press Square, Square, Circle, Circle, Triangle, X

Invincibility: hold L1+R1 and press Triangle, Triangle, X, X, Square, Circle

All power-ups: hold L2+R2 and press Triangle, Circle, Square, X, Triangle, X

All Inventory: hold L2+R2 and press X, Square, Circle, Triangle, Square, Circle

Reset Physical: hold L1+R1 and press X, Circle, Triangle, Square, X, Circle

Reset Magic: hold L1+R1 and press Triangle, Circle, X, Square, Triangle, Circle

Level skip: hold L1+R1+L2+R2 and press Triangle, X, Square, Circle, Circle, Circle

If you put the game in a cd player and listen to tract number 15. It's an excerpt from the Todd McFarlane (the creator of Spawn) interview on one of the Playstation Underground CDs.

Don't let your magic meter get too low while using these. If you do you'll die.

FireBall: Back, Back, Down, Down, X
Magical Blast: Back, Forward, Square
Hell Gauntlet: Back, Forward, Triangle
Ice Blast: Forward, Forward, Down, Down, Circle

Right Cross: Forward, Forward, Triangle
Elbow Smash: Forward, Forward, Square
Right Power Kick: Forward, Forward, Circle
Left Power Kick: Forward, Forward, X
Cape/Chain Attack Right: Half-circle back to front + Circle
Cape/Chain Attack Left: Half-circle back to front + Square
Arm Rip: Half-circle front to back + X

To refill your health, while playing press L1 + L2. This only works a limited number of times.

This is a difficult trick to pull off. First get up to Overkill(the first one),then fight him until he falls. But when he is falling, before he hits the ground, hit start then hold L1+R2 and press triangle square square O X X triangle.Then when you press start spawns cape will wrap around him. Then when his cape comes off SPAWN will be OVERKILL.He can punch,kick,and shoot a laser from his eye, so have fun.