I got bored of playing Gunbound (a game like worms/tanks) so I went looking for a new FREE multiplayer online game and came out with Wolfenstein: Enemy Terrirtory.
The game was supposed to be an expansion pack but was then released as a seperate game for free. It's a first person shooter and it's a great game where your team have to achieve / stop objectives.
If you have fast enough internet then download it (260MB) and check it out you won't regret it.
PS: I'm guessing grfx are good becuase even on my old grfx card 64bit they're pretty cool.
Website:
http://enemy-territory.4players.de:1041/