Insurgency - Take to the streets for intense close quarters combat, where a team's survival depends upon securing crucial strongholds and destroying enemy supply in this multiplayer and cooperative Source Engine based experience.
Counter-Strike - Counter-Strike is a PC-exclusive FPS video game developed by Valve Corporation.
Shadow Warrior - Shadow Warrior by the famously known Flying Wild Hog is a mix-up of brilliant Action, First person Shooter and combat elements and offers a thrilling game-play and story to enjoy.
Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.
Call of Duty: Advanced Warfare - Call of Duty: Advanced Warfare created by the Sledgehammer Games is a wonderful Action and Thrill packed First Person Shooter and Militaristic thematic.
Rage - Rage Software, also Rage Games and FX Digital Network, was a British video game developer.