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.