How To Install Mods In Far Far West - Step By Step

You are staring at a crashing game because Far Far West runs on Unreal Engine 5.7, which rejects standard modding tools and breaks older files every time the game updates. If you have already lost your save file or your game keeps closing to desktop, you are likely missing the specific tilde-prefix folder or using an outdated engine injector.

Why mods fail

The game uses a strict byte-pattern check in Unreal Engine 5.7 that causes generic mod loaders to crash. Additionally, cosmetic mods require a specific folder starting with a tilde character to force the engine to override base assets.

What you will need

Make sure you have the latest .NET runtime installed, and download the specific UE5.7-compatible UE4SS build and the Far Far West Mod Manager (FFMM) from the official Nexus Mods page.

Steps

1. 01
   Navigate to %USERPROFILE%/AppData/Local/Far Far West/Saved/SaveGames and copy all files to a secure backup folder on your desktop; never skip this or you risk permanent save corruption.
2. 02
   For cosmetic or UI mods, navigate to C:/Program Files (x86)/Steam/steamapps/common/Far Far West/Far Far West/Content/Packs and create a new folder named ~build_mods; the tilde prefix is mandatory for the engine to recognize your files.
3. 03
   For gameplay mods, download the UE5.7-specific UE4SS build from Nexus and extract the contents into C:/Program Files (x86)/Steam/steamapps/common/Far Far West/Far Far West/Binaries/Win64.
4. 04
   If using Lua gameplay mods, open the Binaries/Win64/UE4SS/mods folder, open mods.txt in Notepad, and add the activation line for your specific mod at the bottom of the list.
5. 05
   If running five or more mods, download and run Far Far West Mod Manager (FFMM) to handle your load order instead of using Vortex or MO2, which frequently break under this game's engine requirements.

Still not working?

If your game still crashes on launch, it is almost certainly because the game received a background patch. Check the Nexus page for an updated UE4SS build, as the 5.7 engine is highly sensitive to version mismatches. If the game hangs during loading, remove all files from your ~build_mods folder to confirm if a specific cosmetic mod is conflicting with the latest update.

Frequently asked questions

Will using these mods corrupt my save file?

It is possible if you do not back up your data first. Always copy your files out of the AppData folder before installing any gameplay-altering mods.

Why does the game keep crashing after an update?

Far Far West frequently pushes updates that change the byte-pattern of the game executable. You will likely need to re-download the latest UE4SS build from Nexus whenever the game updates.