finish the game with Mace Windu.
Find three gungan artifacts. one is in the Naboo swamp, near the end of the level.
the second in on Tatooine, inside a small hut that is guarded by a Jawa. the final one is in the Gungan ruins, near the end after the covered trap.
finish the game with Adi Gallia.
In two player mode, press R,A,B,X,Y to activate Jedi power battle mode. now you can set about each other with light sabers.
finish all seven training levels and save the game to reveal this Jedi.
Complete the game with Obi-Wan Kenobi to unlock captain Panaka.
finish the game with Qui-Gon Jinn to unlock Darth Maul.
Complete the game with Plo Koon to unlock queen Amidala.
Pause the game and press up, down, up, L, R, L to display a radar map at the top of the screen that shows all the enemies and hostages.
After losing all your lives during a level, continue the game and go back to the same level. pause the game and press L,R,L,L,R,R,L,R,R,L to restart at the last checkpoint.
finish off 100 opponents in the survival mode.
This cheat is soooo easy.All you have to do is go to level three, City of Theed, and get to the part when you drive the tank. Kill the droids that guard the tank and instead of jumping in,attack the tank.It is invincible,so you can keep getting points as long as you want.