At the main start-up screen, hold L1 + L2 + R1 + R2 to display the cheat entry screen. Then, enter one of the following codes to activate the corresponding cheat function:
Hidden stadium Press Square, Circle, Square, Triangle(2), Circle, X(2) to enable "The Difference" stadium. Bonus teams Press X, Triangle, X, Square, Circle, Square, X, Triangle. Then, a new flag will appear to the right of The Netherlands. Win match Press X, Triangle(2), Circle, X, Square, Circle, Triangle. Then, pause the game to win the match of your choice. Big head mode Press Square, Circle(2), X, Triangle, X, Square, Circle. View credits Press Circle, Square, Triangle, Circle, X, Triangle(2), Square.
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