id Software has released the client/server patch allowing Linux users
to play the Linux version of Quake IV. This version requires that the
user has a copy of the Windows retail game - you have to copy the
Assets files from it and you will need the CD Key.
The 18.3MB patch is available to download from
3dgamers,
Gamer's Hell,
FileFront,
VGPro,
Game Guru, or
Worthplaying.
Full instructions for installation can be found on the
Quake IV GNU/Linux FAQ page.
Related Link: Quake4Game.com