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xNVSE

xNVSE is a free Windows project that expands Fallout: New Vegas engine and scripting capabilities for modders and script authors.

Place
#24 of 26
Score
5.4
xNVSE's website

What xNVSE is

xNVSE is a free Windows project that expands Fallout: New Vegas engine and scripting capabilities for modders and script authors. It adds scripting functionality without modifying executable files on disk, which the project says avoids permanent side effects. xNVSE supports the Steam and GOG releases of Fallout: New Vegas. German No Gore, Xbox Game Pass, and Bethesda.net versions are unsupported; Epic Games Store players can use the linked Epic Games Patcher. Installation requires copying the DLL and EXE files into the game directory, not the Data folder, and the project says not to install xNVSE in Mod Organizer 2 as a normal mod. Launch with nvse_loader.exe, or use FalloutNV.exe after applying the linked FNV 4GB Patcher. Releases and changelogs are linked through the project and are also available on Nexus Mods; the source-code ZIP should not be installed. Script documentation is available through the GECK Wiki. Support goes through Discord, while bug reports and other problems go to GitHub issues. The latest release recommends the Viva New Vegas guide for stability.

Good

  • Free project for Fallout: New Vegas
  • Expands engine and scripting capabilities
  • Supports Steam and GOG versions
  • No permanent executable side effects
  • Script documentation via GECK Wiki

Watch out

  • Windows only
  • Several game editions are unsupported
  • Files must not go in the Data folder
  • Antivirus may delete loader files

Who it suits

xNVSE is for Windows players and mod authors using supported Steam or GOG versions of Fallout: New Vegas who need expanded scripting capabilities.

Verdict

xNVSE provides a focused scripting foundation for Fallout: New Vegas modding on supported Windows editions. Installation details, unsupported versions, and possible antivirus deletion should be checked before use.

The facts

Each one read from xNVSE's own pages, with the date it was checked.

What it does

Developers
The repository credits xNVSE development to korri123 (Kormákur), cnf13 (Confused), jazzisparis, and Demorome.checked 7 Oct 2026
Distribution
The project links to the latest release and says releases are also available on Nexus Mods.checked 7 Oct 2026
Documentation
The project directs script authors to the GECK Wiki for documentation on writing scripts that use NVSE.checked 7 Oct 2026
Downloads
The project links to its releases for downloads and changelogs and warns against installing the source code ZIP.checked 7 Oct 2026
Engine changes
It expands the game’s engine and scripting capabilities without modifying executable files on disk, so it has no permanent side effects.checked 7 Oct 2026
Installation
The project instructs users to copy the DLL and EXE files into the Fallout: New Vegas game directory, not the Data folder.checked 7 Oct 2026
Launch options
The game can be launched with nvse_loader.exe or, after applying the linked FNV 4GB Patcher, FalloutNV.exe.checked 7 Oct 2026
Modder resource
NVSE expands Fallout: New Vegas scripting without modifying executable files on disk.checked 7 Oct 2026
Mod installation limit
The project says not to put the files in the Data folder or install xNVSE with MO2 as a normal mod.checked 7 Oct 2026
Purpose
xNVSE expands the engine and scripting capabilities of Fallout: New Vegas.checked 7 Oct 2026
Release guidance
The latest release recommends following the Viva New Vegas mod guide for a stable experience.checked 7 Oct 2026
Script documentation
The project directs script authors to the GECK Wiki for documentation on writing scripts that use NVSE.checked 7 Oct 2026
Security notice
The latest release notice says antivirus software may delete nvse_loader.exe or nvse_steam_loader.dll and suggests temporarily disabling antivirus or using older versions of those files.checked 7 Oct 2026
Stability guidance
The release page recommends the Viva New Vegas mod guide for a stable experience.checked 7 Oct 2026
Support
The project directs users to its Discord server for support and GitHub issues for bug reports and other problems.checked 7 Oct 2026
Supported game versions
xNVSE is compatible with the Steam and GOG versions of Fallout: New Vegas.checked 7 Oct 2026
Supported versions
xNVSE is compatible with the Steam and GOG versions of Fallout: New Vegas.checked 7 Oct 2026
Unsupported versions
German No Gore, Xbox Game Pass, and Bethesda.net versions are not supported; Epic Games Store users can use the linked Epic Games Patcher.checked 7 Oct 2026

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