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.
Netrek is a 16-player two-dimensional graphical real-time battle simulation with a Star Trek theme. A game is divided into two teams of 8 players (or fewer), who dogfight each other and attempt to conquer each other's planets.
Phalanx is a chess playing engine with agresive playing style. It does not have its own graphical interface, but can be used with general chess interface Xboard (Winboard) by Timm Mann. There is also a commercial version that runs as a native Fritz module and thus can be used with the Fritz graphical interface.
OpenCity is a 3D city simulator game inspired by Free Reign and written by Duong-Khang Nguyen.
It is coded in C++ and uses OpenGL and the SDL. The latest stable release of the game is version 0.0.62 released October 22nd, 2009. The game is licensed under the GPL