Although I'm not a "gamer", I enjoy playing computer games from time to time. First-person shooters are especially well-suited for relaxing after a long and exhausting day ;-)
IMHO a very good choice, if you're looking for a fun Free Software first-person shooter running on Linux, is Nexuiz.
Nexuiz version 1.5 has recently been released, which features new maps, new characters, better AI and lots more. Check it out!
Just a quick update on Amaya Rodrigo's recent post on Planet Debian about xbubble's upstream author sending a patch for the Debian xlibs-dev transition: I have uploaded a (hopefully) fixed version of the package yesterday => one step closer to the end of the transition.
Addicting game, btw., give it a try!
OMFG! Only yesterday I said there's no really nice Flash website out there. I might have to reconsider.
(via Manuela Hoffmann)
Later, he also proved that Infinite Minesweeper is Turing-complete (PDF).
I'm so waiting for some kid to solve the P=NP problem by playing minesweeper...
On a related note: I uploaded my Wesnoth game replays (210 KB) for everyone to enjoy. I'm currently playing the Heir To The Throne campaign and finished 16 of 26 levels so far.
For those of you who want to save the money they usually spend in the cinema — grab some beer and watch Wesnoth replays with your friends ;-)