Over the course of the game you will unlock codes for doing various things. For example: Completing a Story. Collecting all the plans in a Level. These Codes do various things, and I am going to list them all, Yoda's quote and what they do down here. It should be noted that you will sometimes get a repeat code. Codes can be inputted on the Pause menu. So having a full list of codes is probably a good idea. As such, here we go.
Yoda Quote: Saber colour, changed it I have...
This Code changes all Lightsaber colours, blaster bolts etc. to Black.
Yoda Quote: Saber colour, changed it I have...
Changes all Lighstaber colours, blaster bolts etc. to Blue.
Yoda Quote: Saber colour, changed it I have...
Changes all Lighstaber colours, blaster bolts etc. to Green.
Yoda Quote: Saber colour, changed it I have...
Changes all Lighstaber colours, blaster bolts etc. to Purple.
Yoda Quote: Saber colour, changed it I have...
Changes all Lighstaber colours, blaster bolts etc. to Red.
Yoda Quote: Saber colour, changed it I have...
Changes all Lighstaber colours, blaster bolts etc. to Yellow.
Yoda Quote: New music you shall play!
Changes the in-game music.
Yoda Quote: New music you shall play!
Changes the in-game music to the main Star Wars Theme.
Yoda Quote: New music you shall play!
Changes in-game music to the battle theme.
Yoda Quote: New music you shall play!
Changes in-game music.
Yoda Quote: Hyper Thrusters you now have!
Gives the Astromech Droids the enhanced hover for a short time.
Yoda Quote: More studs, give you I will.
Gives the player 10 studs.
Yoda Quote: Infinite Stamina you now have!
Allows use of all force powers infinitely.
Yoda Quote: A repairbot will aid you it shall!
Gives a repairbot for an extra life.
Yoda Quote: More speed you now have!
Gives a speed upgrade.
Yoda Quote: Powerful blasters you now have!
Increases the power of blasters.
Yoda Quote: Created something I have...
Drops some random coins near you.
Yoda Quote: Sheep mode found you!?
Activates Sheep Mode. Basically makes all enemies baa when they die.
Yoda Quote: Strange colours the force has in you.
Washes out all the colours in the game till the console is turned off.
Yoda Quote: Play as someone special you shall...
Gives a Golden R2 that works in the exact same way.
Yoda Quote: Play as someone special you shall...
Gives General Grievous as a player character. He has no special abilities with the triggers, and wields two lightsabers. He also can't use the force.
Yoda Quote: Play as someone special you shall...
Gives a Super Battle Droid as a player character. They are the blaster class, but can't jump.
Yoda Quote: Play as someone special you shall...
Gives a Black R2 unit. Works the same way as any other.
Yoda Quote: Play as someone special you shall...
Gives a generic Battle Droid. Blaster class, but can't jump.
Yoda Quote: Play as someone special you shall...
Gives a Pit Droid as a player character. Completely useless.
Yoda Quote: Play as someone special you shall...
Gives a Blue Gungan. Plays the same as Jar Jar.
Yoda Quote: Play as someone special you shall...
Gives C-3PO as a player character. Also useless.
Yoda Quote: Play as someone special you shall...
Gives a Droideka as a player character. Like the other droids, it's blaster class, and can't jump.
Yoda Quote: Play as someone special you shall...
Gives a STAP as a player character. The same as every other droid.
Yoda Quote: Play as someone special you shall...
Gives a Geonosian as a player character. Is your basic Blaster Class.
Yoda Quote: Beware of the dark side... anger... fear... aggression...
Shows all Cutscenes in order. Starting from Episode I and ending with Episode III.