John Madden Football Cheat Codes for 3DO

Attack of the Giant Referee
Start a regular game and pause it. Then press Right, Down, Left, Up, Right, Down. Unpause the game, and the referee will be a giant.

Clear Codes
To disable any codes you've entered, pause the game and press A, X.

Large Players
Pause the game and press R, A, P.

Resize the Players
Pause the game and press B, A, B, A, X, B, A, X. Unpause the game, and the players will return to normal size.