Vault 81

Vault 81 is one of the vault series of fallout shelters developed by Vault-Tec. This vault is located in Massachusetts.

Background
Vault 81 is unlike almost any other known vault, still containing sane and active dwellers. After a simple quest requiring 3 fusion cores, the player character can gain entrance and meet the vault dwellers or by passing a difficult speech test.

Vault-Tec created Vault 81 with the purpose to find a cure for every sickness that humanity could possibly suffer from-by testing said diseases on humans. Before the tests could begin, however, the Vault Overseer had a crisis of conscience and sealed away the test material and scientists in the east wing, allowing the Vault to thrive safely. There was the (still existing) living-part of the Vault where the regular population lived and another monitoring area containing 3 scientists and a Mrs. Handy called Curie. The scientists held mole rats in captivity as lab rats to research cures for diseases and regularly infiltrated a virus into the populated part of the vault to infect the vault dwellers. After a mole rat breakout and the death of the three scientists, the experiment couldn't be continued and the project was forgotten.

After the discovery of the secret part of Vault 81, Austin became diseased by one of the mole-rats from the experiment and the Sole Survivor steps into the forgotten part of the vault to get the cure from Curie.

Layout
It is equipped with advanced security features, such as security turrets directly outside the vault door and a screening area to make sure anyone entering the vault has no weapons or dangerous materials. There are also many security guards present inside the vault who patrol the hallways at all hours.

Notable loot

 * Syringer rifle
 * Medicine bobblehead (Secret Vault 81)
 * Overseer's Guardian, for sale at Alexis Combes' shop.
 * An issue of Taboo Tattoos in Horatio's barbershop.
 * An issue of Grognak the Barbarian in the classroom, as a reward for the side quest Short Stories.
 * Mini nuke, in the Secret Vault 81.
 * Stealth Boy, in the Secret Vault 81.
 * Mutant slayer bolt action pistol

Related quests

 * Vault 81
 * Hole in the Wall
 * Here Kitty, Kitty
 * Short Stories
 * Dependency

Bugs
After your first interaction with him, Calvin (the man who bought tools), will disappear. Possibly after he buys tools from you once. It is unknown. However, it is now confirmed that he is unable to be placed at the player via console commands: every iteration of his ID code (00153855)[EP] has been tested, and none has worked so far.

Appearances
Vault 81 only appears in Fallout 4.

Vault 81 Refugio 81 Abri 81 볼트 81 Krypta 81 Убежище 81