In the game, press backspace then enter:

Code	Result
oldcode	Displays "debug 1". Typing a second time displays "debug 2".
happy	Weapon 3 has more power and displays "Open your heart". Typing again returns weapon 3 to normal power and displays "Excellent meditating!".
from above	Changes camera to above player and displays "Get up on it". Typing again places camera directly behind player (displays "Get down ag'in").
naughty naughty	Places camera directly behind player and displays "Behold my neck-spike". Typing again returns camera to normal and displays "Blort!".
perf	Wireframes on/off.
60fps	Displays "60". Typing again displays "30".
but i feel so good	Push force power color is changed to red and displays "You're the guy with the Force". Typing again changes Push force color back to purple and displays "Play nice".
perfection	Purple colored Push force power now kills and displays "Deadly force authorized". Typing again returns Purple colored Push force power to normal and displays "Nobody's perfect".
slowmo	Slowmo mode (displays "Super slowmo mode"). Typing again returns to normal speed (displays "Normal mode").
beyond cinema	"letter-box" movie mode. Typing again returns to normal and displays "Back to 'ol pan-n-scan".
turntables	Cheat codes won't work correctly from now on and displays "The tables have turned". Some will display "No More Cheating for You". Typing again displays "It was just a dream... OR WAS IT?!" It appears the only way to return things to normal is to exit the game and restart.
i like to cheat	Gives all weapons and adds 500 shots to weapon 2, 500 to weapon 3, 5 to weapon 4, 1 to weapon 5, and 10 to weapon 6 (displays message "You are now the biggest cheater in the world".
give me life	Sets health to 100 (even if already set higher) and displays "Rock on".
heal it up	Sets health to 100 (even if already set higher) and displays "Rock on".
where is gurshick	Runs credits.
gurshick	Runs credits.
brenando	Displays "Tech Bonus!".
rex	Red lines around menu boxes on/off and displays "Feel the power of REX".
iamqueen	Play as Queen Amidala.
iampanaka	Play as Captain Panaka.
iamquigon	Play as Qui-Gon Jinn.
iamobi	Play as Obi-Wan Kenobi.
i rule the world	Displays "Youd da Man".
i really stink	Skill level set to easy and displays "Skill Level Set to Weenie".
fps	Display frames-per-second on/off.
donttttt	Kills player and displays "That's what you get for saying that".
rrrrright	Kills player and displays "That's what you get for saying that".
kill me now	Kills player and displays "DON'T DO IT MAN!!!!".
drop a beat	Waving screen effect and displays "No, really, I feel fine". Typing again returns to normal and displays "Back to reality".

Extra health at Jabba's Champion:

When fighting jabba's champion equip the light repeating blaster and put
in happy as a code. Now shoot jabba's champion and if you do well fighting
him for a while he'll throw health to you. Shoot while the health is coming
down and it will become ton's of health.

More items:

Get to the point in the Tatoonie level where you save the pink person's house in the slave quarters, and you save the man in the corner who tells you to step into his store. You can talk to him repeatedly and not take what he gives you to receive more than one of what he offers.

Help Getting through Theed

To get past the tank and through the gates at Theed, you need some gungan energy balls to turn the two switches. First wait behind the statue, then run straight across to the left of the gate and then down a little side alley, now jump and throw an energy ball to activate the lever. Once the lever has been activated run across the gate and jump up to a window ledge and jump through a window, the second switch is in there. Once both swithches have been activated then the door will open.to reach a small square with Max from the LucasArts game "Sam And Max Hit The Road". Powered by Coranto