Linux games are not inferior to analogues for Windows and Mac
Briefly: temporary interval from 500g to n. e. up to 500g n. e., There are several (at the moment of six) unique nations, whose differences lies not only in the architecture and appearance of units, but also in a technology tree, which, by the way, is very rather big. Graphics – quite at the level, 3D with scrolling :). It is also worth adding that the game is made not only under linux, t. E supports two more common platforms: Windows and Mac.
Also, I would like a couple of words to expand the mention of Xonotic. As I already said, this is the fork of the Nexuiz game, which has moved to the console, and at the moment is perhaps the best of the family of shooters with an open license. The gameplay is somewhat reminiscent of Open Arena, but still differs, and, in my opinion, for the better. The graphics does not cause special enthusiasm (this is natural with all OpenSource games unfortunately), and rejection. As for the game engine, the old-good Darkplaces is still used here.