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.
Unreal Tournament - Unreal is a series of first-person shooter video games developed by Epic Games.
Wolf Team - Wolf Team is the excellent game for those players who love playing FPS games.
Quake - Quake is a series of first-person shooter video games released by id Software.
Fallen Earth - Fallen Earth is an Entertaining, Free-to-play, Open World, Massively Multiplayer Online (MMO), First-person Shooter (FPS), Role-playing, Crafting and Combat video game created by Reloaded Production and published by K2 Network.