Blockade 3D - Use guns, tanks, and even shovels to kill your enemy in different game-modes.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
OpenSpades - OpenSpades is an open source OpenGL-based alternative game client by yvt that can be used to play...
Quake - Quake is a series of first-person shooter video games released by id Software.
Roblox - Reimagining the way people come together.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.