Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Half-Life 2 - Half-Life 2 is a science fiction first-person shooter video game developed and published by Valve...
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Killzone: Shadow Fall - Killzone: Shadow Fall is offering thrilling gameplay, in which you, as the protagonist, need to complete a variety of challenging missions.
Rage - Rage Software, also Rage Games and FX Digital Network, was a British video game developer.
Arma - Experience true combat gameplay in a massive military sandbox.