UE4SS for FarFarWest

UE4SS for Far Far West (Demo) — Runtime Lua Scripting / Modding Framework (UE 5.7)

This upload is a ready-to-use UE4SS v3.0.1 (experimental) build configured specifically for Far Far West Demo (Unreal Engine 5.7).

It is a modding enabler / scripting framework, not a content mod: no gameplay mods are included or enabled by default. Install it once, then drop Lua mods into the UE4SS mods folder to start scripting.

GitHub

What this does
UE4SS provides a runtime modding environment for Unreal Engine games, including:

• In-game console (press ~ / ^ / F10; by default, the console is disabled — you need to enable it in UE4SS-settings.ini)
• Lua mod support (place mods in ue4ss/Mods/)
• Blueprint mod loading (via BPModLoaderMod)
• Live View / UObject Inspector (UE4SS GUI)
• Kismet Debugger, Object Dumper, and other UE4SS utilities
  

Why this is needed for Far Far West
UE4SS typically finds engine functions via AOB (byte-pattern) scanning. Far Far West (UE 5.7) uses patterns that don’t match UE4SS’s built-in signatures, so stock UE4SS won’t fully hook correctly.

This package includes custom signature scripts that supply the correct patterns for this game, allowing UE4SS to function properly.

Included custom signatures

• UE4SS_Signatures/FName_Constructor.lua
  Uses FName::FName(...) by directly scanning the function prologue bytes.
• UE4SS_Signatures/GNatives.lua
  Resolves the GNatives array using an indirect scan and RIP-relative address resolution.

Installation
Download the correct archive:

• UE4SS-FarFarWest-v3.0.1-experimental.zip
• Mod developer: zDEV-UE4SS-FarFarWest-v3.0.1-experimental.zip (includes .pdb symbols)
  

Go to your Far Far West Demo Win64 folder (example):
Steam/steamapps/common/Far Far West Demo/FarFarWest/Binaries/Win64/

Extract so you end up with:

• Win64/dwmapi.dll
• Win64/ue4ss/UE4SS.dll
• Win64/ue4ss/UE4SS-settings.ini
• Win64/ue4ss/UE4SS_Signatures/...
• Win64/ue4ss/Mods/
  

Launch the game normally.

Using Mods

• Put Lua mods into: Win64/ue4ss/Mods/
• Use the in-game console (~ / ^ / F10) to interact with UE4SS.
• Logs are written to: ue4ss/UE4SS.log
  

Troubleshooting

• Game crashes on startup: delete ue4ss/cache/
• GUI not appearing: set GraphicsAPI = dx11 in ue4ss/UE4SS-settings.ini
• Need more details: check ue4ss/UE4SS.log
  

Uninstall
Delete dwmapi.dll and the ue4ss/ folder from the game’s Win64/ directory.

Known limitation
A signature for FUObjectHashTables::Get() is not included; this is currently a UE4SS WIP item and does not impact typical modding features.
In some cases, after game updates (e.g., after the full release), I may need to update the tool.

Credits

• UE4SS by the UE4SS team (MIT licensed).
• Far Far West AOB signatures were extracted using x64dbg from a blank UE 5.7 Shipping build.