Experience all the sights and sounds of fabulous New Vegas, brought to you by Vault-Tec, America's First Choice in Post Nuclear Simulation. Explore the treacherous wastes of the Great Southwest from the safety and comfort of your very own vault: Meet new people, confront terrifying creatures, and arm yourself with the latest high-tech weaponry as you make a name for yourself on a thrilling new journey across the Mojave wasteland. A word of warning, however - while Vault-Tec engineers have prepared for every contingency (should not be construed as a legally-binding claim), in Vegas, fortunes can change in an instant. Enjoy your stay.

The Mojave Wasteland is a dangerous and desolate place… so you feel the need for some companionship during your adventure. Like Fallout 3, New Vegas allows you to have one humanoid and one non-humanoid companion at any time.

Dead Money is set in the Sierra Madre, an opulent and extravagant resort that was supposed to be the greatest casino in the west – except that it never opened. Bombs fell before the gala opening, and the Sierra Madre froze in time, its state of the art security system locking the place up tight. Nothing could get in, and none of the guests could escape. Years passed. The climate control and air conditioning system within the facility began to spit toxins into the surrounding city, causing a slow cloud and haze to form over the area - which proved lethal to anyone who tried to explore the city. Only a mysterious group called the Ghost People survived to call the city home, trapped inside what appeared to be hazmat suits and never speaking to their victims... only capturing them alive and dragging them away to the depths of the city deep within the Cloud.

And so the Sierra Madre faded from the history books, only occasionally being seen in posters across the wastes, until it took on mythic ghost story status... a supposed "City of Gold" in the Mojave Wasteland where all the treasures of the Old World were rumored to be held. It was kept alive as a late-night saloon story by prospectors who'd claimed to have found maps leading there... and were willing to part with the "map" for a few caps. Or a drink. Or a warm place to sleep.

The Sierra Madre is a mythical place in the wastes, with travelers all risking their lives to find it. Only one man truly "found" it - and lived. After the fall of HELIOS One, Father Elijah of the Brotherhood of Steel set out to find new weapons to eradicate NCR. And in the process he found the Sierra Madre. The Courier is lured to the Sierra Madre by a faint radio broadcast advertising the gala grand opening.

From a gameplay standpoint, Dead Money is accessed by loading a save file from any point in Fallout: New Vegas prior to the endgame sequence, in the same way as Operation Anchorage, Point Lookout, The Pitt or Mothership Zeta were triggered in Fallout 3.

This being an extension of Fallout: New Vegas, players will encounter several unique characters, each with their own motivations, all of whom will have to work together if any of them are going to survive. Aside from just struggling with their would-be companions, the courier will also have to deal with the mysterious Ghost People as well as the casino's substantial defense systems.

Dead Money will be available exclusively on Xbox Live beginning December 21, 2010.

Key Features :

• Feel the Heat in New Vegas! Not even nuclear fallout could slow the hustle of Sin City. Explore the vast expanses of the desert wastelands - from the small towns dotting the Mojave Wasteland to the bright lights of the New Vegas strip. See the Great Southwest as could only be imagined in Fallout.
• Feuding Factions, Colorful Characters and a Host of Hostiles! A war is brewing between rival factions with consequences that will change the lives of all the inhabitants of New Vegas. The choices you make will bring you into contact with countless characters, creatures, allies and foes, and determine the final explosive outcome of this epic power struggle.
• New Systems! Enjoy new additions to Fallout: New Vegas such as a Companion Wheel that streamlines directing your companions, a Reputation System that tracks the consequences of your actions, and the aptly titled Hardcore Mode to separate the meek from the mighty. Special melee combat moves have been added to bring new meaning to the phrase "up close and personal." Use V.A.T.S. to pause time in combat, target specific enemy body parts and queue up attacks, or get right to the action using the finely-tuned real-time combat mechanics.
• An Arsenal of Shiny New Guns! With double the amount of weapons found in Fallout 3, you'll have more than enough new and exciting ways to deal with the threats of the wasteland and the locals. In addition, Vault-Tec engineers have devised a new weapons configuration system that lets you tinker with your toys and see the modifications you make in real time.
• Let it Ride! In a huge, open world with unlimited options, you can see the sights, choose sides, or go it alone. Peacemaker or Hard Case, House Rules, or the Wild Card - it's all in how you play the game