GamniX

While quality native Linux games are rather in short supply, those that do end up coming out of the professional game studios end up being first-person shooters, just look at Doom 3, Quake 4, Enemy Territory: Quake Wars, Cold War, Unreal Tournament 2004, etc. Even on the open-source side there are many first-person shooters from Nexuiz to Warsow to many others. If though you have been trying to find a new non-FPS game that has native Linux support, there is a new one emerging and that is QuantZ.

Read more at Phoronix

FreeOrion is a turn-based, futuristic science fiction computer strategy game for Windows, Linux and Mac OSX. The purpose of the game is to lead one of a number of races to dominate the galaxy through a combination of diplomacy and conquest while developing technology, exploring and colonizing star systems. The game uses a point-and-click interface as well as keyboard shortcuts to control the management of colonies, technology, ship construction, diplomacy and combat and comes with both single and multi player game modes.

Read more at Web Upd8

If you’ve got a knack for developing games and want to create one on an open source multiplayer online framework, then have a look at Arianne. Written in bare C and running on a Java platform, the application lets you focus on creating your game while Arianne does the heavy lifting on its server architecture.

What started out as a tiny app written in pseudo-C++ is now a client-agnostic server framework that uses Python for game description, MySQL in the backend, and a TCP transport channel to communicate with other players.

Read more at OSTATIC