Extra Money
Go to the competition mode menu and press: L, R, L, R, Y, X, Up, Left, Up, R, L, R
Invisibility
On the pause menu, press: R, L, Right, Left, Right, Left, Right, Left, Y, X, X, X, X, R, L
Play as House Robots (Arcade Mode Only)
Go to the competition mode menu and press: R, L, Up, Up, Up, L, R, Down, Down, Down, X
Toggle AI
R,L,X,Y,X,Y,UP,DOWN,UP,DOWN,R,L,R
Transparent armor
R,L,R,Y,Y,Y,LEFT,RIGHT,LEFT,DOWN,Y
Unlimited time
R,L,UP,UP,UP,L,R,X,X,X,Y