Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Quake - Quake is a series of first-person shooter video games released by id Software.
Rage - Rage Software, also Rage Games and FX Digital Network, was a British video game developer.
Doom - Doom is a science fiction horror-themed first-person shooter video game in which players assume the...
Team Fortress 2 - Team Fortress 2 (TF2) is the sequel to the game that put class-based, multiplayer team warfare on...