Blockade 3D - Use guns, tanks, and even shovels to kill your enemy in different game-modes.
Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
OpenSpades - OpenSpades is an open source OpenGL-based alternative game client by yvt that can be used to play...
Unreal Tournament - Unreal is a series of first-person shooter video games developed by Epic Games.
Roblox - Reimagining the way people come together.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.