Invisibility 
Do the following sequence whilst in the pause menu: Trigger-R, Trigger-L, 
D-pad-R, D-pad-L, D-pad-R, D-pad-L, D-pad-R, D-pad-L, Button-Y, Button X, 
Button X, Button X, Button X, Trigger-R, Trigger-L. To make the robots normal 
again, just enter the cheat once more. 


House Robots:
Press R, L, Up(3), L, R, Down(3), X at the competition mode menu to unlock 
the House Robots in arcade mode. 


Dominator 2, Tornado, and Chaos 2:
Successfully complete stage 7 in competition mode and defeat the champion to 
unlock Dominator 2, Tornado, and Chaos 2.


Hypno-Disc and Razer:
Successfully complete stage 6 in competition mode and defeat the champion to 
unlock Hypno-Disc and Razer.


Extra Money 
Go to the competition mode menu and input the following button sequence: 
L, R, L, R, Y, X, D-Pad Up, D-Pad Left, D-Pad Up, R, L, R. 


All arenas:
Press R, L, Down(3), L, R, Up(3), Y at the main menu. 


Unlimited time:
Pause game play, then press R, L, Up(3), L, R, X(3), Y. 


Transparent armor:
Pause game play, then press R, L, R, Y(3), Left, Right, Left, Down, Y. 

Toggle invisibility:
Pause game play, then press R, L, Right, Left, Right, Left, Right, Left, Y, X(4), R, L.