Cheat Mode:

Enter the following code at the Vs. screen.

Invisible Players:

Press 4 - 1 - 3 - R-Button. All of the players should then be invisible.

Sticky Fingers:

Press 3 - 2 - 1 - R Button. You should then never fumble the ball.

Ogre?:

Press 1 - 3 - 2 - R Button. You should then play on an ogre.

Shadow Players:

Press 3-1-3-R and you’ll see some sweet shadow players... or ... you wont see them.

Play on Snow Field:

Press 2 - 2 - 5 - R Button. You should then play on a snowy field.