Quake 3
This is the icculus.org version of the GPLed ID software code compiled on puppy from their SVN on about 3/11/06. It includes the ID software Demo game data.
There are several total mods you can download (Reaction, True combat, Urban Terror, Bid for Power, Western Quake, Afterwards). You'll want to download the zip file (if available) and extract it to the ./icquake3 directory. Launch Quake3 and go to Mods.
Any changes made during the game are stored at /root/.q3a If you have problems with any mods delete this file and restart the game.
It's a 77MB download
http://dotpups.de/dotpups/Games/icquake3.tar.gz
You'll need 3D support from your video card and SDL libs.
Download and extract, then click on quake3.
Thanks to MU for hosting the file!