Dark Vault 81 (Updated)

by Qrsr·v009·Updated 2026-10-04

Vault 81 has been completely revamped, turning it into a clearing filled with beasts and moles with no known unique characters.

Screenshots 6 screenshots

About this mod Machine translation

Vault 81 has been completely revamped, turning it into a clearing filled with beasts and moles with no known unique characters.

Original address:

Prefix:

Mechanical Legion

Far Harbor

nuclear world

Shelter Tech Workshop DLC

Unofficial Fallout 4 Patch - UFO4P (optional, if you want to use unofficial patch compatibility patch):

October 4, good update to version 009

The optional unofficial patch compatibility patch will be updated on September 29th. You can choose to install it according to your needs.

Updated on September 27th:

Version 008

Replace RRSignAlly01 [STAT: 000F425C] (special thanks to paul12344 for the tip!!) with RRSignDanger01 [STAT: 000F425E] and move it away from the shelter entrance door

Replaced part FolderPapers01 "Folder" [MISC:00140AF0] with BoSTechnicalDocument "Technical Document" [MISC:0017CC5A]

Removed external spotlights, lights and special effects

Version 007

Use normal plugins when merging units (no ESM flag required at this time, which may be useful for compatibility or load order issues)

Make sure all NPCs are covered correctly

Fixed compatibility issues with some lights and glowing objects

Fixed inappropriate glow color for jet black glasses

Fixed room and entrance marker positions

Renamed "Secret Shelter 81" to "Shelter 81"

The "DialogueVault81##" task is disabled by default

"V81_##" task version 008 is disabled by default

Replace RRSignAlly01 [STAT: 000F425C] (special thanks to paul12344 for the tip!!) with RRSignDanger01 [STAT: 000F425E] and move it away from the shelter entrance door

Replaced part FolderPapers01 "Folder" [MISC:00140AF0] with BoSTechnicalDocument "Technical Document" [MISC:0017CC5A]

Removed external spotlights, lights and special effects

Version 007

Use normal plugins when merging units (no ESM flag required at this time, which may be useful for compatibility or load order issues)

Make sure all NPCs are covered correctly

Fixed compatibility issues with some lights and glowing objects

Fixed inappropriate glow color for jet black glasses

Fixed room and entrance marker positions

Renamed "Secret Shelter 81" to "Shelter 81"

The "DialogueVault81##" task is disabled by default

The "V81_##" task is disabled by default

Updated on May 5th:

Version 006

Clean plugin

Added ESM logo

Dark Radiant Split Plugin

Added CELL plugin (to prevent visual flickering and "hole" bugs, this mod must be loaded at the very bottom of the loading order. It should override any other interior or lighting modifications).

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*As with all great progress, the interests of the many take precedence over the interests of the few. You would infect the people in the shelter with the disease and try to get them to develop antibodies. Some may not survive, but you have to ensure that the breeding population is always maintained. It takes many generations, but with the right procedures, you should be able to create a population of disease-resistant humans. *

*——Vault-Tec Board of Directors*

Overview

This mod is a complete reconstruction of Vault 81.

See spoiler tags below for details:

General situation:

The main door now opens like any other Vault door. There is no Vault 81 scene, no dialogue required, and no need to find a fusion core to enter.

  • Most lights and effects have been disabled or swapped, and light sources have been replaced with real shadow-casting lights

——PreVis and PreCombination (PVC) are disabled

  • Using room markers and portals to allow for more shadow casting lights, therefore, to enhance the atmosphere
  • Disabled elevator car switching, loading screen pormpts once player uses elevator door
  • All doors now close automatically

-The PC can open the secret door, but the button must be found. Loot:

  • Ownership is disabled, players can loot the location, no red text
  • Most pre-war and clean items have been replaced with dirty or post-war items

——The terminal is intact and all logs can still be read.

  • The holotape has been replaced

NPC:

  • All NPCs replaced with more generic and …

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. There is no universal mod manager for this game: some mods replace game files directly, some go into a game-specific Mods folder, and some need a game-specific community loader or tool first — follow the bundled readme.
  3. Place the files exactly as the readme says; mods with listed dependencies need those installed too.
  4. Launch the game to confirm it loaded; some games require enabling mods in settings or an in-game mod menu.

Install locations vary a lot between games and mods — the bundled readme is the most reliable guide.

File & checksum

Filename
RadiantVault81_009 98637 009 2026-10-04T03-45Z ySsaoNcg1.zip
File size
157.1 KiB
SHA-256
0c53fb5c8693b8345f8086d843d8d726ebb42935d1922ea9d855263886ccc06a
Stored at
2026-10-10 15:24