Fallout: New Vegas' Vault 11, Explained

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Learn everything about Vault 11 and its disturbing past

Co-authored by Glenn Carreau

Last Updated: March 4, 2026 Fact Checked

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What is Vault 11?

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History

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Design

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Loot

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Survivors

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Other Creepy Vaults

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Video

Are you fascinated by the lore of the Fallout franchise’s many mysterious Vaults? Then you’ll be absolutely blown away by the story of Vault 11: a social experiment in the Mojave that ended with just a single survivor. After all, Fallout’s Vaults all have their secrets (and hidden purposes), and Vault 11 is no exception! Before we dig in, a warning: Vault 11’s fate isn’t a pleasant one, and there’ll be mentions of violence as we discuss the Vault’s history and lore. With that said, let’s do a deep dive into Vault 11’s purpose, history, and design in Fallout: New Vegas.

An Introduction to Vault 11 from Fallout: New Vegas

Vault 11 is a Vault from Fallout: New Vegas. It was a social experiment to test morality and self-preservation. Vault-dwellers were told to make yearly human sacrifices, not knowing that they’d be rewarded for refusing. As a result, dwellers began holding elections to see who would be that year’s sacrifice.

Section 1 of 6:

What is Vault 11 in Fallout Lore?

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Vault 11 is a location that appears in Fallout: New Vegas. In Fallout lore, Vault 11 is one of six vaults in the Mojave region of the United States, constructed by Vault-Tec before the bombs dropped in 2077. Many of Vault-Tec’s underground sanctuaries were built with the intention of conducting social experiments on the residents, and Vault 11 was no different—although Vault 11’s experiment was particularly dark, because it revolved around human sacrifice.
- Other Vaults in the Mojave region include Vault 3, Vault 19, Vault 21, Vault 24, and Vault 34.

Section 2 of 6:

Vault 11’s Background & History

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Vault 11’s residents were told to sacrifice one of their own each year. Vault 11’s social experiment was as follows: once the Vault was sealed, its inhabitants were told by a pre-programmed computer that they’d have to sacrifice one of their number each year, or everyone in the Vault would be killed. However, in truth, it was an empty threat—and if the residents refused to sacrifice one another, they would be set free as a reward.^{[1]
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- The Vault’s computer was programmed to play a congratulatory message if the residents decided not to play along and sacrifice each other, explaining that their “commitment to human life” had merited a reward.
- For refusing to kill one another, the Vault’s doors would unlock, and the Vault-dwellers would be given the freedom to travel in and out (with the overseer’s permission).
- Essentially, Vault 11’s experiment weighed the residents’ self-preservation versus their morality.
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The Vault’s original inhabitants fell for the ruse and began yearly sacrifices. Unfortunately, the Vault-dwellers didn’t realize the empty threat; they believed they had to perform sacrifices, and decided to choose their sacrifices through democratic elections. The person chosen would become the Vault’s overseer—and at the end of the term, they’d be sent to the sacrificial chamber and executed.^{[2]
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- The Vault’s original overseer entered the Vault knowing that he’d have to ask for yearly sacrifices, but he wasn’t aware of the truth behind the experiment.
- Angry that they’d been trapped in the Vault under such circumstances, the Vault’s first residents elected that overseer as their first sacrifice.
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Vault 11’s overseer tradition continued for 16 years. Each year after that first sacrifice, a new overseer was elected and then sacrificed. By 2093, the population had divided into “voting blocs,” which had the political power to influence elections. The voting blocs nominated overseer candidates based on their individual political goals—but by the final year, corruption and manipulation began to complicate the process.^{[3]
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- The voting blocs in Vault 11 were the Allied Service Workers Bloc, the Divine Will Bloc, the Human Dignity Bloc, the Justice Bloc, the United Vault Technicians Bloc, and the Utilitarian Bloc.
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The Vault’s selection process devolved due to corruption. By the time the Vault’s final election cycle rolled around, the leader of the most powerful bloc, the Justice Bloc, tried to coerce resident Katherine Stone by threatening to nominate her husband. Even though Katherine capitulated to leader Roy Gottlieb’s demands, the Justice Bloc went ahead and nominated her husband as overseer—leading Katherine to kill several members of the bloc.^{[4]
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- As a result, Katherine was elected the next Vault overseer instead of her husband.
- As overseer, Katherine immediately issued “Overseer Order 745,” dissolving the election process and declaring that the position of overseer was to be determined randomly.
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In the end, only five Vault dwellers were left alive. Angered over their loss of power after Katherine abolished the election process, the remainder of the Justice Bloc staged a bloody coup that resulted in the deaths of all but five Vault 11 residents. Those survivors, tired of the bloodshed, went to the sacrificial chamber to tell the Vault computer that they refused to keep making sacrifices—and inadvertently set themselves free.
- The Vault’s computer congratulated them as programmed, unlocking the Vault’s doors and revealing the experiment that had been at play for the last 16 years.

Section 3 of 6:

Vault 11’s Layout & Design

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Vault 11 is located west of Boulder City. In New Vegas, players can actually enter the Vault and uncover its gristly history for themselves. The Vault is situated next to a hollowed-out rock, and the interior is significantly damaged—due to the Vault’s infighting and the passage of time, as New Vegas takes place around 188 years after the Vault’s fall.^{[5]
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- Once inside the Vault, players will discover radioactivity (including radioactive water) resulting from damage to the Vault’s reactor and water purification system.
- Some sections of Vault 11 are even underwater, and can only be explored with a rebreather (or by surfacing periodically).
- The entire Vault is noticeably covered in election propaganda, with each bloc’s candidate expressing dismay at being nominated and offering reasons for the other candidates to become overseer instead.
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Vault 11’s upper levels consist of an entrance and the living quarters. In the Vault’s entryway, players can find four skeletons and an audio log—evidence of the Vault’s final survivors and their ultimate fate. A clinic, classroom, cigar lounge, and bathroom are also accessible from this point, as are a set of stairs leading to the Vault’s living quarters.
- Vault 11’s living quarters consist of a common room, lab, and computer room, as well as dormitories for men and women.
- The dormitories contain interconnected hallways with bedrooms branching off, containing footlockers (and some assorted belongings left over, including a few Vault 11 jumpsuits).
- There’s also a security office—which, in turn, leads further down into the Vault, to the overseer’s office.
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The overseer’s office is located in the lower levels of the Vault. There’s a rigged shotgun pointed at the entrance of the overseer’s office; inside, there’s a terminal (requiring a password) with information about the Vault, as well as final overseer Katherine Stone’s deposition. By exploring the atrium, players can track down the terminal’s password, as well as a holotape on the Vault’s annual overseer elections.^{[6]
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- There’s a utility room connected to the hallway that leads to the overseer’s office. In the utility room, players can find a differential pressure controller—needed for a Brotherhood of Steel quest called “Still in the Dark.”
- Players can also discover a cafeteria on this level, although the entrance is trapped with explosives.
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The Vault’s sacrificial chamber can be accessed via the overseer’s terminal. Issuing a terminal command will open a chamber under the desk and a long tunnel, at the end of which is a room with a single chair and a projector. When the player sits in the chair, a presentation will begin; a voice will tell them that they lived a good life, and their next will be even better. At the end, panels in the wall will open, unleashing hostile robots and turrets, which immediately attack.
- Players—as New Vegas’s protagonist, “The Courier”—can defeat the turrets and robots.
- When all enemies are defeated, players can also access a side-chamber with the Vault’s mainframe computer, containing the Vault’s true purpose: to discover how long it’d take for residents to refuse sacrificing their own.

Section 4 of 6:

Loot in Vault 11

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Just like most locations in Fallout: New Vegas, there’s loot to be discovered (and picked up) in Vault 11. Here’s a breakdown of the loot you can find throughout the Vault:
- Differential pressure controller - Located in one of the lower-level flooded rooms.
- Holotapes - There are several holotapes scattered throughout the complex.
  - “System recording: Vault 11 solution” - On the mainframe terminal (next to the sacrificial chamber).
  - “Automated solution response” - Also on the mainframe terminal.
  - “Prepared speech of Gus Olson, ombudsman, for the annual overseer election” - In the atrium, on a podium stand.
- Justice Bloc HQ security tapes - Found automatically after reading the personal terminal located in the living quarters.
- Mini nuke - In the living quarters (security offices), behind a locked door.
- Nuka Cola - Inside a metal crate in the cafeteria (up to 20 bottles).
- Pugilism Illustrated - In the female dorm area, propped against an overturned dresser.
- Roy Gottlieb’s terminal password - In a footlocker in the male dorm area.
- Vault 11 jumpsuits - In various dressers and lockers throughout the dorm areas.
- Vault 11 overseer’s terminal password - On the terminal in the atrium.

Section 5 of 6:

Did anyone survive Vault 11?

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Yes, one person is presumed to have survived Vault 11. The audio log found at the entrance of Vault 11 reveals what happened to four out of the five survivors of the coup: horrified at their actions, they went to the Vault’s entrance and discussed ending their own lives as punishment for the years of sacrifices. However, one voice—a man’s—can be heard protesting, trying to convince the rest to leave the vault.^{[7]
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- The man’s voice urges the others to leave the Vault so they can tell the world what happened and ensure others learn from their mistakes.
- The other four survivors ultimately don’t listen, and four shots can be heard on the audio log.
- The fifth man likely leaves the Vault after that, although it’s unknown what happened to him after that.

Section 6 of 6:

Other Creepy Fallout Vaults

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As terrible as Vault 11’s fate is, there are other Vaults in the Wasteland subjected to experiments that were just as sinister—if not more so. Some of these Vaults appear in various Fallout games, and a couple even appear in Amazon Prime’s Fallout TV series. Here, we’ll take a quick look at some of the creepiest (and most diabolical) Vaults in the Wasteland:
- Vault 4 - From the Fallout TV show, Vault 4 was a testing ground for unethical genetic experiments on residents. However, the test subjects were able to rebel and retake the Vault, making it a haven for Vault-Tec’s victims.
- Vault 12 - Fallout’s Vault 12 was designed with a simple flaw: its door didn’t seal properly, allowing radiation to affect the Vault’s populace. This led to most of the residents becoming ghouls and forming the sanctuary of Necropolis.
- Vault 19 - Fallout: New Vegas also introduces players to Vault 19, where residents were separated into groups and exposed to stimuli, making them paranoid and mistrustful, ultimately leading to a bloody conflict.
- Vault 24 - Seen in the Fallout TV show, Vault 24 was built as a place for scientists to see if they could brainwash Americans into being communists, with propaganda (and worse).
- Vault 75 - In this truly nightmarish scenario, Vault 75 took in children and their families, only to dispose of all adults and experiment on the children to extract “superior” genes.
- Vault 87 - Appearing in Fallout 3, Vault 87 was a research facility for viruses—using residents as test subjects. Most residents died from exposure to the disease, and those left transformed into Super Mutants.
- Vault 112 - Fallout 3’s Vault 112 placed residents in suspended animation, hooking them up to a virtual reality simulator. Once inside, they were subjected to physical and psychological torture by the Vault’s overseer.