Chess for mobile OS Android, it is possible to play online on FICS, tha largest chess server, or offline against a chess engine with difficulty setting.
Tuxánci are czechoslovak multiplatform action game. In the begining it was inspired by czech game Bulánci (which is however only for MS Windows), but now it goes its own way. The game is programmed in language C and the rendering core is based on SDL library. Man can play two-players game on one computer or in network multiplayer.
Minetest-c55 is one of the first InfiniMiner/Minecraft(/whatever) inspired games (started October 2010), with a goal of taking the survival multiplayer gameplay to a slightly different direction.
The main design philosophy is to keep it technically simple, stable and portable. It will be kept lightweight enough to run on fairly old hardware. It runs playably on a laptop with Intel 945GM graphics.
It is released under the GPL, with the intention that that way it is a lot easier to use by Linux users and people can report and help fix bugs more effectively.
One of the best space simulation is available also in a Linux version.
Thirty-two years have passed since the Great war. Terrans and Vasudans have formed a new alliance. But new threats are lurking around.
Toga II is a chess program, derivative of Fruit created by Thomas Gaksch. It has more chess knowledge and perhaps a better search algorithm. It is based on Fruit 2.1 and is free.