Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Doom - Doom is a science fiction horror-themed first-person shooter video game in which players assume the...
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Quake - Quake is a series of first-person shooter video games released by id Software.
Unreal Tournament - Unreal is a series of first-person shooter video games developed by Epic Games.
Hexen II - The Hammer of Thyrion project is a cross-platform source port effort of Raven Software's Hexen.