Updated: 12/29/2005
Game-Q3
Excessive
Excessive is an over-the-top mod that makes all the weapons super-powerful, turns off self-damage, gives all the players regenerating health and ammo, and makes every game into a wild and crazy frag-fest! In the fast and furious bloodfest that is Excessive, it's not about staying alive; it's about taking as many people as possible out with you. [Report a dead link]
http://www.planetquake.com/excessive/

Extreme Arena
[Report a dead link]
http://www.planetquake.com/quake3/features/motw/xa.shtml

Q3 Generations
A mod for Quake 3 Arena. Uses classes and unique weapons for each class. Powerups also have unique effects for each class. [Report a dead link]
http://www.planetquake.com/wirehead/generations/