I-Ninja Game Cheats

In Game Cheats:
During a mission pause the game and enter the following codes.
Note: Mission Complete only works on normal missions and not on ''Collect the Red Coins'' or 'Find all Enemines'' Missions.

Cheat Effect
Hold R button, Y, Y, Y, Y, Release R button, Hold L button, Y, Y, Hold R button + L button, Y, X, Y Characters will have big heads

Hold L+R and press X,B,X,Y,Y,B,X,B Sword Upgrade

Hold R and press B,B,B,X ,release R hold L and press Y,Y, release L then hold R and press B.B Complete Current Mission

Unlock Battle Arena:
Do the following and the Battle Arena will be opened in Robot Beach.
Unlockable How to Unlock
Battle Arena Get all normal grades, then get the master grade.