Open Megaton

⭐ — (17 endorsements) 📥 398 downloads 📌 v1.0.0 📅 2/19/2026
🟡 Updated this year

By dhert · Overhauls

⬇ Download Mod Source: Nexus Mods ↗ 📅 Updated: 2/19/2026 📅 Created: 2/19/2026
⚠️ Install Order · 5 steps
1🛠️ NVSE — New Vegas Script Extender Download ↗
2🛠️ 4GB Patcher — FNV 4GB Patcher Download ↗
3🔧 NVAC — New Vegas Anti Crash Download ↗
4🧩 JIP LN — JIP LN NVSE Plugin Download ↗
5🔧 YUP — Yukichigai Unofficial Patch Download ↗

Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.

🔍 Analysis

  • 🏆 #3 of 20 Overhauls mods in this game by downloads

📋 About This Mod

Opens the Megaton Worldspace to the Capital Wasteland!

Open Megaton

Opens the Megaton Worldspace to be seemlessly integrated into the DC Wasteland!

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Features:

  • []Requires a new save!

    []Persistent references are moved by this mod, which requires a new game.

[]Opens the Megaton Worldspace to the Wasteland.

[]New and created from scratch, based on TTW 3. 4.

[]Megaton Gate opens and closes, based on the player.

[]All quests tested and accounted for.

[]New Guards added to the Crow's Nests to help defend Megaton.

  • []If shot, they should fall out of the nest.

[]SCOL'd walkways, and Pipes for better performance.

[]Placed many MultiBounds to help with performance.

[]Rebuilt NavMesh for Megaton.

[]New LOD pieces so Open Megaton still has LOD.

  • []Highly recommend you also use: TTW Fallout 3 LOD

[]Clean, ESM, all the things.

WARNING:

  • []This REQUIRES a new save, and cannot be removed from an existing save!

    []There WILL be a performance hit, though relatively modern PCs should be fine.

    []Without NVR, I see only an occasional dip in performance but typically am at a constant 60FPS. This includes the Capital Landscapes version.

    []With NVR, there is a hit though FPS in the area is typically consistent around 50-55 FPS, with only occasional dips. That's just the price to pay for better graphics.

    []If using the Capital Landscapes version and NVR, expect even more of a hit to performance due to the added lights and other items.

    Known Issues:

    • []Confessor Cromwell will repeat the last line of his speech everyday.

      []This is not a bug with the mod, but with TTW.

      []This is reported to be fixed in TTW 3. 5.

    []The Capital Landscapes version has some buildings extruding out of the wall.

    • []Not really anything I can do here without remaking the house meshes, or cutting them; both things I'm not really wanting to do.

      []Just think of it as buildings built in to the wall due to lack of space.

      Compatibility:

      • []Built-in compatibility for:

        []TTW Reputations

        []Tweaks for TTW

        []Lucy West Companion

        []Capital Landscapes - Use the Capital Landscapes version in the FOMOD.

      []Patches available for:

      • []D. C. NPCs (safe to merge)

      []Compatible with (Load Open Megaton after):

      • []EDGE TTW

        []Megaton Outskirts

        Not Compatible with:

        []Older versions of TTW.

📊 Mod Details

Game
New Vegas Mods
Author
dhert
Version
1.0.0
Downloads
398
Endorsements
17
Category
Overhauls
Created
2/19/2026
Updated
2/19/2026

🔧 How to Install New Vegas Mods

Download from Nexus.

📖 Full step-by-step install guide for New Vegas →

Visit the official mod page for specific installation instructions for this mod.

🎮 Need cheat codes or console commands? Check ur gaming wiki for New Vegas commands, item IDs, and more.

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