Vault 112

Vault 112 is one of the Vault-Tec Vaults located in the Capital Wasteland. It was built well hidden underneath Smith Casey's Garage, north-east of Girdershade. The vault was built to house and tend to the needs of Dr. Stanislaus Braun, creator of the Garden of Eden Creation Kit. Within it Braun invented a virtual reality simulator and cryogenics system containing several simulated utopias including Tranquility Lane. The system should have permitted a select few to live a 'perfect life' practically forever.

What Braun's fellow occupants didn't know was that once they entered the virtual reality pods they were trapped, forced to endure any psychological torment that Braun proceeded to inflict upon them over the coming centuries. He would proceed to kill each one of them in the most horrific and graphic ways, each time wiping their memory so he could do it all again, as the deaths were virtual. Dr. Braun may have been a sociopath from the moment he created the system, or there is the equal (and even more disturbing) possibility that he simply degenerated over time, due to boredom, god-like control of the simulation, and semi-isolation. Regardless, he shows a callous disregard for the psychological welfare of the vault residents, and takes pleasure in subjecting them to greater emotional and physical distress.

Vault Layout
Vault 112 houses an entrance area similar to Vault 101, which serves as the airlock and the only connection to the outside world. A single passage in the entryway leads down to the main hall. In there are twelve Tranquility Loungers built around a big pillar, each connected to a terminal which monitors the respective conditions of the "subjects" inside the loungers. There is also another Tranquility Lounger, found in the Overseer's Office, located south of the main hall. The only medical unit of the vault is accessed east of the main hall.

Since it cannot be maintained by any human inhabitants (they're all in the Tranquility Loungers), Vault 112 is instead maintained by a group of Robobrains. The Robobrains are surprisingly non-hostile and greet any newcomers as a "late" addition to Vault 112.

Because of being constantly maintained by robobrains, Vault 112 and 101 are the only intact vaults in the Capital Wasteland. It can also be argued that this vault never "failed", as it's true purpose was to house people in tranquility loungers indefinitely.

Tranquility Lane System Fail-Safe
It is possible to get yourself and your father out of there without having to do the tasks Betty gives you. Inside the abandoned house you will find several objects. Activating these objects in the order of tones that Betty whistles while playing outside (an error sound will play when you've picked the wrong object) will make a terminal appear with some of Dr. Braun's notes on previous simulations. Click broken radio, glass pitcher, gnome, glass pitcher, cinder block, gnome, empty soda bottle. There will also be a 'Chinese Attack Failsafe'. Initiating this failsafe will spawn several Chinese Commandos outside that kill everyone. A door will also spawn near Betty, allowing you to leave the simulation and walking up to your father. You will gain good Karma for this, "releasing the residents from their torment".

Notable Loot
Several Stimpaks and Chems can be found in the medical unit, accessed east of the main hall. Very high Skills in either Science or Lockpicking are required to open the door.

Hacking the terminal on the ground floor grants you access to a weapons store room.

Loot on one playthrough: Laser Rifle 7 x Microfusion Cell Assault Rifle 3 x 5.56mm Round 3 x Frag Grenade 3 x Pulse Grenade

Continuity Errors

 * Though the Robobrains insist they will only allow someone to sit in the Tranquility Lounger if you are wearing a Vault 112 jumpsuit, when your father steps out of his he is still wearing his Vault 101 suit.
 * After completing the quest, and when your father has left, the monitor in front of the Tranquility Lounger he occupied still displays his information.
 * The Vault-Tec computer in the citadel lists 85 loungers in the equipment list, however there are only thirteen present, although these may be spares. No reason is given for why the broken chair has not been replaced/repaired.

Appearances in games
This Vault appears in Fallout 3.