Possibly the best conversion of Quake2's The Edge (q2dm1, id Software). The author has made lots of small tweaks and changes that don't stray too far from the original, yet still feel right at home in Q3A. Game play is good and the texturing and lighting are spot on. Bots seem to hang out in the main atrium, which makes playing bots pretty dull. Best kept for human only games.
A great conversion. (The author has a script file on the outside of the pk3, this may cause problems on pure servers)
Update: The download has been updated to version 2. There are a number of minor changes between the two version - all of which improve the gameplay.