Crash of the Titans - Platform: Sony PSP

Big Head Crash:
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Press Start to pause game play. Then, hold R and press 
Square(2), Triangle, X. Keep R held until the game is resumed. 
Repeat the code to disable its effect.

Shadow Crash:
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Press Start to pause game play. Then, hold R and press 
Triangle, Square, Triangle, Square, X. Keep R held until the 
game is resumed. Repeat the code to disable its effect.

Skins:
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Complete the indicated task to unlock the skin for Crash.

Battler      : Jack 35 Battlers.
Bratgirl     : Defeat 130 Brat Girls.
Doom Monkey  : Defeat 500 Doom Monkeys.
EE-Lectric   : Jack 50 EE-Lectrics.
Goar         : Jack 30 Goars.
Halloween    : Complete 50% of the game.
Koo-ala      : Defeat 150 Koo-Alas.
Magmadon     : Jack 50 Magmadons.
Ratnician    : Defeat 200 Ratnicians.
Rhinoroller  : Jack 30 Rhinorollers.
Scorporilla  : Jack 15 Scorporillas.
Shellephant  : Jack 15 Shellephants.
Sludge       : Jack 50 Sludges.
Snipe        : Jack 50 Snipes.
Spike        : Jack 50 Spikes.
Stench       : Jack 50 Stenches.
Valentine    : Collect all Gold Idols.
Voodoo Bunnie: Defeat 200 Voodoo Bunnies. 

Easier jacks:
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Wear a skin that matches the creature to be backed. A single hit 
will knock it out, allowing it to be jacked easily.