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Playstation - Dead Ball Zone cheats

Get Unlimited weapons
Highlight the "French" option at the language selection screen.
Push Up, Up, Down, Down, Select, Triangle, Circle, Square, Square, 
Right, Right, Left, Left, Start buttons in order on your 
playstation controller.

Unlock all teams and stadiums:
Highlight the "Italian" option at the language selection screen.
Hold L2 + R1 + Up + Square buttons for 10 seconds to get access 
to all teams and stadiums.