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The Fallout wiki with 140,193 pages (24,752 articles) since February 7, 2005‎.
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Featured article
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The Mariposa Military Base was a top-secret United States military facility built to house Forced Evolutionary Virus research previously conducted by West Tek, located somewhere in the area of the unincorporated community of Mariposa in California. The construction of Mariposa started in October, 2076 when large progress was made in FEV research, and the government preferred to move the project to a location under military supervision.

The base remained silent after the Great War of 2077, until 2102 when an expedition led by Harold and Dr. Richard Grey cracked open the deathtrap of a facility. While exploring, both Harold and Dr. Grey were knocked into the vats of FEV by an automated crane. Harold escaped, but Grey mutated severely and became the infamous Master. The Master then sought to use the facility to create super mutants and the Unity, a perfect society in the not-perfect wasteland.

Did you know...
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that the T-51b power armor was the pinnacle of personal protection technology at the time of the Great War?

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that it is impossible to beat ZAX at chess due to a bug?

...

that Robert House remained unconscious and cryogenically frozen for 61 years?

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that mirelurks appeared in the bays of Massachusetts even before the Great War occured?

...

that Vault 15's city map in Fallout 2 is not of a vault, but a Series 1000 Shelter?

...

that the bomb in the center of Megaton is actually of American design?

Helping out
All pages can be edited and you are welcome to join us and contribute to this wiki. Everyone is free to create a new page or edit an existing one. If you have any questions about the wiki or helping out, you can ask one of The Vault's administrators. You may want to check out the help pages and policies and guidelines.
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Our Articles
Walking the Freedom Trail
This article is our way to celebrate the 241st anniversary of American Independence!
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Far Harbor: A Size Comparison
This article is devoted to a commonly raised issue: Just how large is Far Harbor?
The basic facts
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Did you know...
...

that the T-51b power armor was the pinnacle of personal protection technology at the time of the Great War?

...

that it is impossible to beat ZAX at chess due to a bug?

...

that Robert House remained unconscious and cryogenically frozen for 61 years?

...

that mirelurks appeared in the bays of Massachusetts even before the Great War occured?

...

that Vault 15's city map in Fallout 2 is not of a vault, but a Series 1000 Shelter?

...

that the bomb in the center of Megaton is actually of American design?

Helping out
All pages can be edited and you are welcome to join us and contribute to this wiki. Everyone is free to create a new page or edit an existing one. If you have any questions about the wiki or helping out, you can ask one of The Vault's administrators. You may want to check out the help pages and policies and guidelines.