Star Wars: Knights of the Old Republic Cheats

Earn Different Endings
Finish game on the Light Side (by doing good deeds and denying the Dark Side) to see the Light Side ending. Finish game on the Dark Side (by doing evil and accepting the Dark path) to see the Dark Side ending.

Easy Heal
Anytime you are in a safe area (not in combat or inside a room) you can instantly heal yourself. Go to the Map screen in the pause menu and hit the X Button to instantly leap back to the Ebon Hawk. Your party members will be magically healed. You can then select the Map screen and hit X again to jump back to where you just were.

Extra Sidequests
Talk to the other members of your party often. Most have an extra side quest that can only be activated by talking to them at least 8 times during the game. Sometimes it takes even more. Bastila's, for example, has you searching for her mother on Tatooine and Carth's has you hunting for his lost son.

Finding Party Members
Bastila - Jedi Human - Taris
Canderous - Mandalorian Soldier - Taris
Carth - Human Soldier - Endar Spire
HK-47 - Combat Droid - Tatooine (buy him in the droid shop)
Jolee Bindo - Jedi Human - Kashyyyk
Juhani - Jedi Guardian - Dantooine (don't kill her!)
Mission - Tw'lek Scoundrel - Taris
Zaalbar - Wookie Scout - Taris
T3-M4 - Expert Droid - Taris

Kill Good Guys on Tatooine
After helping the men defend the Sand Crawler in the desert, put on Sand People outfits (taken from dead Sand Folk) and return to the Sand Crawler. The men will attack you, thinking you are enemies. You are free to defend yourself and kill them. Truly an evil act.

Infinite Computer Spikes
When you know that you're going to need some computer spikes you know that you can go to T3-M4 in your ship to get them but unfortunately he won't give you any if you have 11 or more in your inventory. The best way around this is to go to your supply cargo and deposit your inventory of computer spikes and then go back and get some more from T3-M4. This can be very time consuming because you can only deposit one at a time but you can extract them all at once when you need them. When you know you'll need them retrieve them and hack the hell out of the system.

Infinite Experience
In the dueling room on Korriban, there's a computer that lets you fight prisoners. Once you get your computer skill to the level that allows you to use 0 spikes to Hack Into Security Cameras or Hack Into Sith Database Files, just select that choice a few times and when you exit the computer interface, you'll get a load of experience. Infinite Dark Side Points On Dantooine after you fight Juhani, go back to Master Vandar and Ahlan Matale will come in and blab on. Go to the Matales' house and say you come on behalf of the Jedi council and Mr.Matale will come out. He will try to bribe you. When he does say, "Make it 2,000." He will deny you, but keep on doing it and you'll get infinite points.

Item Duplication
Go to Manaan and down into the underwater facility. Equip your teammates with the armor and accessories that you want to duplicate and save(very important)right in front of one of the pressurised door. Now, unequip all of the things you want duplicated from your teammates and go into the pressurised door.Go right back in and you will notice that your teammates' equipment are back on. And more importantly, you will notice that there is a duplicate of each item added to your inventory. You can do this as many times as you want, and as far as I know, it causes absolutely no problems. It's your choice to keep it, or sell it for big bucks.

Also note that when you duplicate an upgraded weapon, all the items that are in it are duplicated too. So, you don't have to worry about things like evenly distributing crystals to all of your jedis lightsabers. Just make your best lightsaber, and duplicate it.

Voice Change
With your primary controller plugged into the first port, plug a second controller into the fourth port. At any time, you can use the second controller to change the pitch of the voice acting. Black Button: Lower pitch (Barry White) White Button: High pitch (like Michael Jackson)

Quick Money
Get the grenades made by the Wookie on your ship, and set yourself on any planet with a store. Sell the grenades, then go to the Wookie for more. Repeat this over until you get however much you want.

Hidden Ending
(You need two controllers for this trick) Before the the final battle with Darth Malak press the L & R Triggers plus the Y Button on all controllers that you have plugged into the Xbox. It's recommended to have the primary controller in port 1 and another controller in port 4. This must be done before you enter the door to face Darth Malak. You'll know if you did it right if your Jedi takes out her/his lightsaber. Then open the door and walk up to Malak and talk to him.