The following is a list of cheats for Unreal Tournament 3. They are working for the UT3 Demo as well. To type in the code, you need to open the console which is usually done by pressing the TAB key in the game. Note that most of these cheat codes only work in single player mode.
| Action | Effect |
| god | invincible or god mode |
| ghost | ghost mode, or better known as noclip mode in other games. Will make it possible to walk through walls. |
| allweapons | get all weapons |
| walk | resets walk and ghost mode |
| fly | you can fly |
| killbots | kills all bots in the game |
| behindview 1 | enables a third person camera |
| summon VEHICLE | creates a vehicle. Replace the text vehicle with the type you would like to be created:
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This was an awesome game. You actually have some cheats on here I have never seen before. I think I am going to have to un bury this game and give them a try!