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.
Borderlands - Borderlands is a science fiction first-person shooter with RPG elements made with cel-shaded...
S.T.A.L.K.E.R.: Shadow of Chernobyl - S.
Bulletstorm - In this sci-fi first person shooter, players take on the role of mercenary Grayson Hunt in an attempt to get off a hostile alien planet and get a little bit of vengeance along the way.
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.
Urban Terror - Urban Terror started as a realism based "total conversion" mod for Quake III Arena.