Reload, rev up and ride out. The new Tournament is faster, higher and
meaner. Land and air based vehicles take combat to a new level; while
an arsenal of new weaponry, daunting arenas and battlefields and the
challenge of the Assault and Onslaught modes make the gladiator blood
sport of the future a brand new experience. Buckle up it's gonna be one
hell of a ride!

Optional bonus packs and more: http://liflg.org/?catid=6&gameid=17

Notes:

A guide for how to use this SlackBuild to install ut2004 with this SlackBuild
using the game source found at gog.com can be found here:
http://docs.slackware.com/howtos:misc:games:ut2004

This takes the installer (which has the latest version) from Linux
Installers For Linux Gamers and nicely installs it into a package
following Slackware standards. This SlackBuild should detect if you're
playing on a 32-bit or 64-bit system and install the correct bins.

Your game data (and mods) must go into "/usr/share/games/ut2004". There
is a home folder (.ut2004) for your configs, but you'll need to be able
to modify the contents located under the share/games folder.  You should
have permissions to modify this folder with the games group.

It's probably best to put the game data downloaded from Steam or from
your CDs in "/usr/share/games/ut2004" before installing this SlackBuild.

You'll need to create a file named, "CDkey" in the
"/usr/share/games/ut2004/System" directory. And in it, you need to
provide the cd key you have from Steam or the retail box. Otherwise the
game will fail to launch.

The mod selection menu is broken, you'll need to launch mods with a
parameter. Here is an example with Killing Floor: ut2004 -mod=KFMod20