Here are some cheats and tips for the game Dead Ball Zone.
All stadiums and teams:
Highlight the “Italian” option on the language selection screen. Then,
hold L2 + R1 + Up + Square for approximately ten seconds.
Unlimited weapons:
Highlight the “French” option on the language selection screen. Then,
press Up(2), Down(2), Select, Triangle, Circle, Square(2), Right(2),
Left(2), Start.