Alpha Centauri, Majesty, Kohan, Nexuiz and X.
Ennemy Territory : Quake Wars
Teeworlds (formely known as "Teewars")
By order of importance:
1. X2/3. (My wife will divorce me one day because of this game...)
4. Doom3. (When I need a good scare...)
5. Wine (TFC2, RO).
5. Quake 3/4 (Modifications).
Neverwinter Nights, Neverwinter Nights, and Neverwinter Nights.
Does that count as 3? :D
To tell you the truth, I've been very frustrated everytime I try a new Linux game...
I'm astonished so many can use Steam with Wine. That's a no-go over here ( steam crashes... bong ).
wesnoth, ut2004, vegastrike