A desktop tool for converting maps from classic Unreal (Tournament) games to UT3 (2007) and Unreal Tournament 4 (2015).

Please note: This tool is not fully automated — finishing a converted map usually requires some manual work in the Unreal Editor. Maps from non-Unreal games may convert successfully, but this is neither tested nor supported.

Supported conversions

Source game	Target game	Conversion quality
U1 / UT99 / Duke Nukem Forever (2001)	UT3 / UT4	Good
UT2003 / UT2004	UT4	Good
Unreal Championship 2 / U2 / UT3 / UDK	UT4	Medium
Any game	Unreal Engine 5	Not supported

Users have also reported successful conversions from Star Wars Republic Commando and Stargate SG-1: The Alliance, although these are untested and unsupported.

Known limitations

• Custom scripts, blueprints and shader materials are not converted.
• U1/UT99: meshes are not converted.
• U2: static meshes have incorrect UV mapping.
• UT3: converted levels may appear too dark, as there is no direct equivalent of the ZoneInfo actor.
• UT3/UDK: music is not converted.
• UT9x → UT4: all movers are converted to the UT4 lift actor, which may not behave correctly for doors or switches.

Requirements

• Windows 7/8/10/11 (64-bit)
• The source Unreal (Tournament) game (for the input map) and the UT3/UT4 editor (for the output map)
• A basic familiarity with Unreal Engine editors

Getting started

1. Download and install the latest release (.exe).
2. Launch the program and point it to your game folders in Settings.
3. Convert a map via File → Unreal (Tournament) → Convert Map to UT4/UT3....

To update to a new version, uninstall the previous one first, then install the new release.

For a detailed, step-by-step conversion guide, see the UT Converter Wiki.

Building from source

You will need git, Maven and OpenJDK 25.

git clone https://github.com/xtremexp/UT4X-Converter
cd UT4X-Converter

mvn clean javafx:run    # compile and run the UI
mvn clean install       # build the Windows installer (.exe), output in target/package

Notes:

• The UI (.fxml files) can be edited with Scene Builder.
• ExtractTextures.exe and UtxAnalyser.exe are Delphi tools, built from the sources in src/delphi/ (based on the modified UT Package Delphi Unit by Antonio Acordero) using Delphi Community Edition.

External tools

The following third-party tools are bundled with the application and invoked during conversion:

Tool	Purpose	Author
g16convert	Terrain bitmap conversion	Alex Stewart
UModel	Unreal package extraction	Konstantin Nosov
SoX	Audio conversion	Multiple
UTXAnalyser / ExtractTextures	U2 texture inspection and extraction	Antonio Acordero (modified)

License

This project is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) license.

History

A complete changelog is available in history.md.