Nexuiz

[Tristicus]

http://www.alientrap.org/nexuiz/

I was just hoping EVERYONE knew about this agme. It is really a good game, and fun with people online or just against bots, and best of all, it is free and you can run it on systems that are 10 years old :p

[Melcar]

A lot of people know about this game. It's fun, addictive, and possibly the best fps out there for Linux. What makes it better than other open source games of the type is that people actually play the damn thing and the servers are actually playable (when it comes to pings and latencies). The looks may be a bit dated, but the game is fun.