The Saboteur - The Saboteur mixes in the regular setting that many open world action adventures travel to simply by using a World War II theme instead.
Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.
Dead Space - Dead Space is a survival horror third-person shooter video game for Microsoft Windows, PlayStation...
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Evolve Stage 2 - Evolve Stage 2 is an Action, First-person Shooter, Stealth, Survivor, Single and Multiplayer video game created by Turtle Rock Studios and published by 2K Games.
Unreal Tournament - Unreal is a series of first-person shooter video games developed by Epic Games.