Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Doom - Doom is a science fiction horror-themed first-person shooter video game in which players assume the...
Quake - Quake is a series of first-person shooter video games released by id Software.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Hexen II - The Hammer of Thyrion project is a cross-platform source port effort of Raven Software's Hexen.
BioShock - Get the latest information on BioShock, BioShock 2, and BioShock Infinite