Fallout New Vegas: Dead Money and the Loneliness of the Sierra Madre

Dead Money is the first and most divisive New Vegas DLC — a survival horror sequence set in a pre-war casino called the Sierra Madre, still broadcasting a beacon decades after the war, still poisoning everything around it with a cloud of toxic gas. Its difficulty and resource restriction are the most aggressive in the series.

The DLC’s antagonist is Frederick Sinclair — the Sierra Madre’s founder, a pre-war billionaire who built the casino as a monument to his obsession with Christine Royce, a woman who did not love him back. Every system in the Sierra Madre was designed to protect her. The Gala Event that was supposed to restore their relationship became the trap that preserved the casino and cursed everything inside it.

The Ghost People — the DLC’s primary enemies — are couriers and service workers who put on hazmat suits to work in the cloud and could never take them off. The suits grew into them. They became something that was neither alive nor dead, still following patterns of movement from jobs they were performing on the day the bombs fell.

What Father Elijah, the DLC’s antagonist, wants from the Sierra Madre is the gold in the vault — and the technology to replicate the cloud, which he intends to use as a weapon. The player must choose whether to trap him in the vault, escape with him, or die with him. The best ending leaves him trapped behind a door he cannot open, in a casino he cannot use, with gold he cannot spend.