Quake - Quake is a series of first-person shooter video games released by id Software.

Sniper Elite V2 - Sniper Elite V2 is a Fantastic, Action-Adventure, Stealth, Co-op, WWII, First and Third-person Shooter, Tactical, Single and Multiplayer video game created and published by Rebellion.

Call of Duty - Call of Duty is a first-person and third-person shooter series by Infinity Ward.

Arma 2: Operation Arrowhead - Arma 2: Operation Arrowhead is a Tactical, First-person Shooter, Single and Multiplayer video game created by Bohemia Interactive Studios and published by 505 Games.

Xonotic - Xonotic is a free (GPL), fast-paced first-person shooter that works on Windows, OS X and Linux.

Arma II - Arma II is an Awesome, Action-Adventure, Military-themed, FPS (First-person Shooter), Tactical, Co-op, Strategy, Single and Multiplayer Simulation developed and published by Bohemia Interactive.