UE4SS for Retro Rewind

UE4SS for Retro Rewind

UE4SS (Unreal Engine Script System) is a required modding framework that enables Lua-based mods to run in Retro Rewind. You must install it before adding any Lua mods. It has been tested with Retro Rewind Build Changelist 2072 and newer.
For Linux or Steam Deck users, additional launch options are required (see below).

Quick Start (TL;DR)

• Download UE4SS_v3.0.1 from the Files section (use the main file, not zDEV)

• Extract and copy all files into: RetroRewind\Binaries\Win64\

• Open ue4ss\UE4SS-settings.ini and set ConsoleEnabled = 1

• Launch the game

Linux / Steam Deck users must add this to Steam launch options:
WINEDLLOVERRIDES="dwmapi=n,b" %command%

What is UE4SS?

UE4SS is a background framework designed for Unreal Engine games that allows Lua mods—like those available on this page—to function in Retro Rewind. It only needs to be installed once.

It is developed by the RE-UE4SS team. This upload is provided for convenience, with full credit going to the original developers.

Which Version Should You Use?

Two versions are available:

• UE4SS_v3.0.1 (main file) – Recommended for all users

• zDEV-UE4SS_v3.0.1 (optional) – Intended for mod developers only

The zDEV version includes debugging features and extra overhead, which may cause performance issues. Use the main version unless you are actively developing mods.

Installation

Windows

1. Open Steam → Right-click Retro Rewind → Manage → Browse local files

2. Go to: RetroRewind\Binaries\Win64\

3. Extract the UE4SS archive and copy all files into this folder

Your folder should include:

• RetroRewind-Win64-Shipping.exe (game executable)

• dwmapi.dll (must be in the same folder as the .exe)

• ue4ss\ (contains UE4SS files)

Linux / Steam Deck

Follow the same steps as Windows, then add this launch option in Steam:

Steam → Right-click Retro Rewind → Properties → General → Launch Options:

WINEDLLOVERRIDES="dwmapi=n,b" %command%

Without this, UE4SS will not load and mods will not work.

Enabling the Console

UE4SS runs silently by default. To use mod keybinds and view outputs:

1. Go to: RetroRewind\Binaries\Win64\ue4ss\

2. Open UE4SS-settings.ini

3. Under [Debug], set:
   ConsoleEnabled = 1

Optional settings for a visible console:

• GuiConsoleEnabled = 1

• GuiConsoleVisible = 1

Note:

• Visible console may cause performance drops on some systems

• F12 screenshots may capture the console instead of the game

• Use Ctrl + O to toggle the console window if needed

Troubleshooting

• Game crashes on startup
  Ensure files are placed in the Win64 folder, not the root directory. Confirm dwmapi.dll is next to the game executable.

• No console appears
  UE4SS may still be running silently. Check for a log file in Win64\ue4ss\. If none exists, files may be misplaced.

• Game does not launch
  Make sure you installed the main version, not zDEV.

• Screenshots capture console
  Set GuiConsoleVisible = 0 or toggle with Ctrl + O.

• Stuttering or performance issues
  Disable the visible console (GuiConsoleVisible = 0). If needed, also set GuiConsoleEnabled = 0. Ensure you are not using the zDEV version.

• Mods not working on Linux / Steam Deck
  Confirm the launch option WINEDLLOVERRIDES="dwmapi=n,b" %command% is added.

Credits

UE4SS is an open-source project maintained by the RE-UE4SS team and contributors. This page simply re-uploads the tool for convenience so Retro Rewind players can access a compatible version.

All credit belongs to the original developers. You can support the project here:
https://github.com/UE4SS-RE/RE-UE4SS