Fallout: New Vegas
Developer: Obsidian Entertainment / Bethesda Game Studios
Publisher: Bethesda Softworks
Released: October 19th 2010
About
New Vegas is related to Fallout 3, but isn't a direct sequel or prequel, nor is it an expansion pack — it's a full game; a near-contemporaneous and independent look (four years later) at another part of the same world at the same time. Gameplay is just about identical: first-person shooter/roleplaying hybrid with a deep customization system.
It's the year 2281, 204 years after the Great War of 2077, during which the entire world was devastated by nuclear weaponry. Las Vegas managed not to be directly hit by a nuclear strike, so most of its buildings and infrastructure remain intact, and its population unmutated. You are a courier sent to deliver a package, intercepted and shot in the head by a casino owner, and revived by a robot and a kind doctor. In your attempt to recover the package the courier quickly gets caught up in the power struggle between three major factions and many smaller tribes competing for control of the Hoover Dam and its associated power generation and uncontaminated water.