Mod:Fallout: New Vegas Mods

A page listing some mods for Fallout: New Vegas.

About
Mods modify elements in the game, hence the name "mod" as an abbreviation of "modification", with most of them being found in Nexus Mods and installable with the tool Mod Organizer 2.

Mods fit into 4 categories: resource for other modders to create their own mods, bug fixes not implemented by the original company, simple sound or texture replacements, and behavioral changes.

When loading mods, the game loads the original files first then the mod files. If any conflict happens between two or more mods implementing the same change, then the most recently loaded file has priority over the other files. Mod Organizer 2 marks mods that have been overwritten by the selected mod in green, and mods that are overwriting the selected mod in red, meaning the mod with the highest load priority will overwrite any conflict it has with other mods

Warnings
Strategies to create, implement, install, and run mods are being updated regularly, because of that it is generally advised to avoid mods that were not updated since 2015, since most of them were hard-coded and implemented in sub-optimal ways.

There are many outdated guides, most of them recommending Mod Organizer, Nexus Mods Manager, New Vegas Anti Crash or Continue After Games Ending. It is best to avoid those guides since the content they recommend have been superseded by better alternatives.

Some mods might change the original game files, so if the mod has to be removed then the game must be re-installed. Most mods will not cause this problem.

Since mods can change how the game behaves, it is not recommended to install or uninstall them in the middle of a playthrough. Doing so might lead to small problems like invisible elements or loss of equipment, or it might have larger impacts like crashing the game or preventing quests from continuing.

This page is not a mod recommendation or a list of all mods, it is purely an explanation of the types of mods available.

Nexus Mods has an anti-virus that scans the mod files for malicious content and a moderation team that removes problematic users, while other websites might not. Because of that, it is recommended to use Nexus Mods over other websites.

Some mods will use an extension file .esm or .esp to load custom objects. The original game has a load limit of 128 files, with a mod increasing that limit to 256.

Modder's Resources
Most mods in this category are more of an infrastructure for other people to create their own mods, and less of a mod itself. Having only a resource mod in the game will not change the gameplay or other elements in the game, but it will add elements that other mods can use to change the game.

Mods that use a modder resource will need the modder resource installed.

Bug Fixes
Mods in this category are highly recommended since they change elements in the game to fix bugs that were not found the the developers. Since development for Fallout: New Vegas has finished, all new bug fixes will have to be done by mods.

Many of single or older bug fixes have been superseded by Yukichigai Unofficial Patch and Unofficial Patch NVSE Plus.

Replacement Mods
Most mods in this category will replace texture or sound from the original game. Usually these mods are less problematic since the game would load the file anyways, removing the need to use a file to load custom objects into the game.

Most replacement mods can be used by themselves without any prerequisites.

Behavioral Mods
Mods in this category use a file to load custom objects into the game, which allows the mod to fully replace existing or add new characters, locations, equipment, or other elements. Because of the large scope of possibilities, these mods are more prone to conflicts, so it's generally recommended to either use many mods that focus on different changes, or one mod that encompasses most of the desired changes.

Most modern behavioral mods will also need a modder resource.