50 Vault-Tec C.E.O.
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Vault 21 - Everything's better... when you experience it in a vault.Mr. New Vegas, Fallout: New Vegas

Vault 21 is a Vault-Tec vault that was once hidden under Las Vegas, Nevada. It has since been converted into a hotel/casino and acts as one of many sources of income for Mr. House and his young New Vegas empire.


Located in downtown Las Vegas, Nevada, Vault 21 was a unique Vault experiment: everyone in the vault was equal, it was created with a perfectly symmetrical layout, and the dwellers settled their differences via games of chance. Reliance on luck to solve problems created what might be considered the perfect realization of anarchy: a society in which everyone is equal and no one has an advantage over the others. Vault-Tec ensured that every person admitted to the vault when it first sealed was a compulsive gambler, and were unable to decline when Vault-Tec personnel running the vault informed them that this was how the vault was to be run. The original dwellers then passed on their lifestyle to their children and so on.

However, as with all utopias, the peace was not lasting. Sometime between 2271 and 2281, Robert House learned of Vault 21's location. Resisting attempts to be assimilated into his empire, the inhabitants agreed on gambling to settle the issue. The game they played to settle the deal was blackjack and almost the entire vault was in attendance. In a risky bet, the supporters of House won against the opposition, and the lower floors of the vault were repurposed as a storage for Mr. House's most secret technologies and as a "residing" for Mr. New Vegas and sealed afterwards to protect these, forcing the dwellers to resettle in the wasteland and on the Strip. At Sarah Weintraub's and Michael Angelo's (a.k.a. Sheldon Weintraub) insistence, House left the topmost level intact and allowed the Weintraub's to establish a hotel there, which became another source of income for his fledgling empire.

Vault 21 is one of the extremely rare experimental vaults which successfully protected its inhabitants while fulfilling the parameters of its experiment. The experiments in most other Vault-Tec vaults ended up killing or permanently altering their inhabitants. Although Vault 3 was a control vault, intended to recolonize the surface after an extended period of time, when its door was opened the Fiends slaughtered its residents and took over.


Vault 21 exterior

The vault's main cog door has been transformed into a sign advertising the vault/casino. "Vault 21" is emblazoned on it in neon lights. The vault entrance is an above ground building which contains the Vault 21 gift shop. It is run by one of the only two native residents to have remained, Sarah. Stairs lead from the gift shop down into the vault.

The vault has been converted into a casino and hotel. There is a central atrium with gambling tables, a hallway with living quarters, including Sarah's room and a guest room that the player can rent. Another door leads to the cafeteria/diner. The lower levels were sealed by Mr. House and are inaccessible except for the case that Mr. House unlocks them.

The lower levels consist mainly of similiar looking floors and several locked rooms, which contain several of the secrets of Mr. House. In these floors patrol a variety of robots, which scale and vary with the players level and are hostile towards the player until the completition of the quest Wake up New Vegas!. On the lowest level of this area is the room of Mr. New Vegas from which he sends out his radio broadcasts across the Mojave and it is also the place of the final showdown of Wake up New Vegas!, where the fate of people's entertainment will be determined.


Notable loot

Toy car sensor module

The over-sized toy car and toaster

Related quests


  • The background music is Serenity, which has been originally used for Modoc.
  • If you have started The Finger of Suspicion, then there will be three Omerta thugs threatening Martina Groesbeck in one of the rooms.
  • The Tops houses an elevator that goes down to the basement and connects via a blown open wall to the service areas of Vault 21. This elevator is normally locked and unable to be picked, but is automatically unlocked if Benny is given the chance to flee when confronting him at The Tops.
    • There is a locked door at the end of a hallway in the vault that can be unlocked using console commands. An invisible part of the Vault will appear if you walk a little forward. There are no lights and this part ends-up with two staircases leading to nowhere.
  • Although the theme of this vault revolves around gambling, and there are gaming tables around, it is not possible to gamble in this location.
  • No doors in this vault feature a gold stripe and the number 21. The same is true for Vault 3.
  • A picture showing James and Catherine (The parents of the Lone Wanderer from Fallout 3) can be found beside a bed in Sarah Weintraub's room.
  • The lights in the vault appear very dirty and rusted, and are actually the models seen in ruined vaults, such as Vault 34.
  • The eastern billiards room contains a jukebox named "Jukey The Jukebox". Other than the name, it doesn't appear to be special in any way.
  • If you leave items in the locker of your room and later get the reputation of "Wild Child" for The Strip, then you cannot rent the room or retrieve the items.
  • Players may make this their personal vault/home once they are given a room by Sarah.
  • Vault 21 is the only vault that does not have a gear-shaped blast door.
  • If you look to the right when you walk go in, you will see the Vault 101's bulletin on the wall with only a couple changes made to it, such as the Vault 101 bake off ad being changed to Vault 21.
  • There is a working light switch in the player's hotel room.
  • There is a slightly undersized terminal in the gift shop.


Vault 21 appears only in Fallout: New Vegas.

Behind the scenes

  • Vault 21 was designed by Jorge Salgado.
  • Vault 21 is a reference to the card game "Blackjack", where 21 is the highest sum and its limit, usually declaring an instant victory. This supports its gambling theme.
  • James Garcia created the 3D model of the neon sign letters.


  • pcIcon pc ps3Icon ps3 xbox360Icon xbox360 If you take the tour with Sarah Weintraub, your companions may disappear and not reappear when you exit the Vault.[verified]
  • pcIcon pc xbox360Icon xbox360 ps3Icon ps3 Sarah may not recognize Vault 21 jumpsuits as vault gear, but will trade for them normally at the usual price.[verified]
  • xbox360Icon xbox360 Sometimes when you take the tour with Sarah Weintraub, she will walk with you out of the gift shop and then stay still above the stairs leading to The hotel part of Vault 21 and will be unable to talk to.[verified]


See also