I-Ninja Cheats for Game Cube

Cheat List
During gameplay, press START and enter any of these codes:

Sword Upgrade
- Hold L BUTTON + R BUTTON, X, B, X, Y, Y, B, X, B Complete Current Mission
- Hold R BUTTON, B, B, B, X, Release R BUTTON, Hold L BUTTON, Y, Y, Release L BUTTON, Hold R BUTTON, B, B Big Heads
- Hold R BUTTON, Y, Y, Y, Y, Release R BUTTON, Hold L BUTTON, Y, Y, Hold R BUTTON + L BUTTON, Y, X, Y

Unlock Battle Arena
To Unlock Battle Arena, earn all the Grades, Then you should get the Master Grade. The Battle Arena Will be open at Robot Beach.


Hint: Rage Up

To easily raise your rage in the game, try destroying inanimate objects such as barrels, flowers, grass, mushrooms, computer monitors, and anything else you can potentially destroy. This will allow you to easily raise your rage level without having to fight animate objects.