you can play on linux even better (if you know the right places)
see www.holarse.net!!!
The problem is, that linux-games aren't as well known as windows games
and THAT is the reason why windows is a good GAMING platform
the people like to pay a lot for games... Lunix users like to get them for free

u know, cube isn't that bad... it's funny!
http://wouter.fov120.com/cube/
and if you just rate the graphics of a game you are really poor...
that doesn't mean that linux games haven't good graphics
but what do you need all that light-effects of UT2003???
You know the old games
HEXEN and HERETIC?
i LOVE that games
especially hexen, i played it really often, and even today i sometimes play that game
THINK: The old games are the best games!!! Compare DSA (Das schwarze auge --eng: the black eye, dunno if there is an english version) to never winternights... nwn is booooring, really booooring
BEST GAMES I KNOW:
hexen, descent 2, d-generation, comic, ULTIMA UNDERWORLD 1 and 2, Commander Keen, dragon strike (i played that game some weeks ago... didn't take me long time LOL), PacMan, Prince of Persia 1 and 2, King's Quest1-6, Space Quest 1-5, Duke Nukem, UFO, Starfire, Inca, Might and Magic 1-5, Simon the Sorcerer 1 and 2, Hocus Pocus, Jazz Jackrabbit, Lands of Lore 1 and 2 (also 3 is good), Tyrian, Wacky Wheels, Digger, Terminal Velocity
Try out all these games: http://www.dosgamesarchive.com/
GreeZ
LOneWoolF