“You've heard stories of the Sierra Madre Casino. We all have. This story's different than the others. It's all in the promise of beginnings. And the ending.”
A timed exclusive[1], Dead Money was released on December 21, 2010 for the Xbox 360 platform. It was released for the PC and PS3 platforms on February 22, 2011.
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. After many years the climate control and air conditioning systems 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 memory, only occasionally being seen in posters across the wastes, until it took on mythic ghost story status, a supposed "City of Gold" in the 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 risking their lives to find it. Only one man truly "found" it and lived. After the fall of HELIOS One, Father Elijah of the Mojave Brotherhood of Steel set out to find new weapons to eradicate the NCR, and in the process he found the Sierra Madre.
Chris Avellone discussed some of the design decisions behind Dead Money [1]
In poker, the term "dead money" may to a player who continues to bet into the pot even though he has no chance of winning.
Bugs
Xbox 360 If the quest ED-E My Love is not completed before beginning the DLC, upon the player's return the quest will have disappeared and ED-E will be hostile.
Playstation 3 If you find a card which adds to the count for completing a challenge, you can drop the card and pick it up again which adds to the count. Doing this five times with grant you 100 experience.
Playstation 3 Killing Ghost People will not grant you any experience.