Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Arma - Experience true combat gameplay in a massive military sandbox.
Rage - Rage Software, also Rage Games and FX Digital Network, was a British video game developer.
War Thunder - War Thunder is a Free-to-play, WWII, Massively Multiplayer Online, Military-themed, Strategy, and Combat Simulation developed and published by Gaijin Entertainment.