This page is for the original game. For the reboot, see Unreal Tournament (2014).
A list of all official patches can be found here.
Note that v436 is the latest official patch available.
The vast majority of graphical tweaks are accomplished by editing the game's .ini configuration files.
Installing the Direct3D 10 renderer allows you to play the game in high-resolution, widescreen, and Direct3D 10. There's also a Direct3D 11 renderer (currently no significant changes from D3D10 renderer), D3D9 and OpenGL renderers. Be warned that when playing online you may be kicked from servers using anti-cheat plugins.
Replace the original textures with S3TC Textures and get amazing detail. Do not use these server-side.
Various modifications, custom content such as characters, maps, mutators, and total-conversion mods can be downloaded and installed for Unreal Tournament.
Maps are custom levels that are created using mod tools or editors.
Install the osspd package (Some distros like ArchLinux refers the package as ossp) and enable/start the osspd/osspd.service service.
Run the game with padsp command (It is included with main PulseAudio package, if not, look for pulseaudio-utils)
Run the game with aoss -32 (On 32 bit system just use aoss)
Then save the file.
chmod +x <name of the file>