Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
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.
Unreal Tournament - Unreal is a series of first-person shooter video games developed by Epic Games.
Arma - Experience true combat gameplay in a massive military sandbox.