Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
World of Tanks - World of Tanks is an Addictive, Action, Massively Multiplayer Online (MMO), Browser-based, and Tank Combat video game developed and published by Wargaming.
Quake - Quake is a series of first-person shooter video games released by id Software.
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.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
World of Warplanes - World of Warplanes is Free-to-play, Action, Arcade, Massively Multiplayer Online, and Flight Combat video game created by Wargaming and published by BigWorld.