This game is also available on PS3.
Retro Game Cheats for Skate 3 (Xbox 360)
Effect: Unlocks Isaac from Dead Space as a playable skater
Effect: Enables Mini-Skater mode.
Effect: Enables Zombie Mode. Pedestrians chase you, screen goes yellowish.
Effect: Hoverboard mode. Trucks and wheels disappear from your deck
Effect: Resets all objects in every area back to their original positions
Effect: Get's the player online.
When:
Anytime you like.
How:
Right you sign out of Ea nation, then you got the freeplay you go down to other skaters you click either meatman, issac, or dembones. You get someone to invite you to and online game(freeskate) then you should have your guy.
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Effect: Unlock Dem Bones
Effect: Unlock Meat Man