Things You'll Need
Instructions
Turn on your Xbox 360 and two controllers, then sign each controller into a profile by clicking the Guide button and selecting "Sign in".
Insert the Unreal Tournament 3 Xbox 360 game disc and wait for it to initialize. When you get to the main menu, select "Multiplayer" and begin setting up the game with your desired options.
Select "Enable split screen" on the final options selection page, then start the game. The game will now begin in two-player split screen mode.