Vault 51

Vault 51 is a Vault-Tec vault located in the Forest region of Appalachia in 2102.

Background
As with the other vaults, Vault 51 was sealed shut during the Great War in 2077. Twenty-five years later in 2102, the vault remains sealed.

Vault 51 contained a ZAX that was guided by Robert Baker to choose an overseer. Reuben Gill was eventually chosen as overseer but Zax eventually turned on him. The overseer eventually escaped his vault with the goal of finding help from the Vault 76 residents to shut down the ZAX. However, he died before completing that mission.

Vault 51's experiment tested both tribalism and the ZAX unit turning the vault dwellers against each other.

Layout
You first walk in to the Vault entrance with the signature cog door. Next to the Vault Entrance is two hallways that lead to the reception desk, and the other leading to a big warehouse stockpiled with supplies. After the storeroom there is the security office with multiple desks and a big console with multiple screens. The reception desk leads to the atrium (main hall) and a secluded artificial park/pond. A soccer ball spawns in the room with the pond. The atrium has multiple entrances leading to the entertainment parlor, a stage, bedroom, and the Overseer's Office. The Overseer's Office is locked by a laser gate which is opened when the player character obtains the overseer rank of 10+. The overseer's office includes a desk, terminal, multiple chairs and tables, file cabinets, red consoles, and a big window where usually players will stand in front of the window. The office then leads to the Vault 51 ZAX Mainframe which again is locked by a laser gate which can be opened with Overseer Rank of 100+. The mainframe includes two terminals, multiple monitoring screens, the ZAX Computer itself which is designed as the Vault-Tec Logo. There are also big wires everywhere. Next is the stage which includes multiple instruments players can play while waiting to start playing Nuclear Winter. The stage also has a catwalk which is only open for players with Overseer Rank of 30+. The gym/fitness room has a boxing arena as well as multiple fitness bikes. The gym has a door leading to a boiler/pipe like room. This is unlocked at overseer rank level 20+. Below the overseer's office is a Vault-Tec Super Reactor and the reactor control room which is also only open to players with Overseer rank of 10+. Next we have the library which is decked out with desks and terminals.

Occupants
There were 52 listed original occupants, which is the same number of maximum players allowed in Nuclear Winter mode:

Notable loot

 * Harold Clark - To the Members of the Board, pt.1 - Holotape, on the theater, behind the curtain of the stage, at the left on top of a metal box.
 * Clayton Ward - 20780415
 * Harold Clark - To the Members of the Board, pt.2 - Holotape, on the floor of a bathroom.
 * Elizabeth Chambers - 20771019 - Holotape, on the bar in the lounge room.
 * Joel & Elizabeth Chambers - 20780623 - Holotape, can be found on a bench in the garden area.
 * Joel & Elizabeth Chambers - 20780803 - Holotape, on a table on the balcony overlooking the band, behind the Overseer rank 30 grid.
 * Helen Marks & Reuben Gill - 20780803 - Holotape, on a push cart in the medical room.
 * Sgt. Baker - 20771013 - Holotape, on the bar in the overseer's office.
 * Sgt. Baker - 20771120
 * Sgt. Baker - 20780727
 * Sgt. Baker - 20780806
 * Reuben Gill - 20840520 - Holotape, on a desk near a terminal in the security room.
 * Reuben Gill - 20940303 - Holotape, next to a TV in the overseer's bedroom.
 * Reuben Gill - 21021023 - Holotape, on a bureau in a room to the northwest.
 * Reuben Gill to whoever finds this vault - Holotape, next to a terminal at the entrance.

Appearances
Vault 51 appears only in Fallout 76.