UDK Game: Skyworld
1. Download and open the .exe (it will download 3 files: Engine, UDKGame, and Binaries).
2. Once finished downloading, you can check the "run" option to immediately start the game, or you can go to the Binaries folder, click on the Win32 folder, and open the UDK.exe to play the deathmatch!
3. Mess around with the settings and mutators if you'd like and enjoy!