Case study

OpenUT2k4: recreating Unreal Tournament 2004 in Unreal Engine 5.8

OpenUT2k4 recreates Unreal Tournament 2004 in C++ on Unreal Engine 5.8 using maps, characters, audio and music converted locally from the player's installation. It builds maps at runtime and implements UT2004 network compatibility so its client and server can play alongside the original game.

Targets: Game · Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 20
Last commit: 2026-10-29
Language: C++
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a download method observed; no demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: Unreal Engine 5.8, a C++ toolchain and about 20 GB of project disk space are required to build.
Prerequisites: Playing requires UT2004 game data from an existing installation or the OldUnreal download, and a Vulkan-capable GPU and driver or a Metal-capable Mac.
Testing evidence: Linux is built and tested; Windows and macOS scripts are unverified.
License: MIT License; Unreal Engine has a separate license.

Cite

BibTeX

@misc{openut2k4-case,
  title = {{OpenUT2k4: recreating Unreal Tournament 2004 in Unreal Engine 5.8}},
  howpublished = {\url{https://github.com/GloriousEggroll/OpenUT2k4}},
  url = {https://github.com/GloriousEggroll/OpenUT2k4},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/openut2k4-case/}}
}

Plain text

OpenUT2k4: recreating Unreal Tournament 2004 in Unreal Engine 5.8. https://github.com/GloriousEggroll/OpenUT2k4 (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/openut2k4-case/

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About this entry

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Primary sources

README.md GitHub · GloriousEggroll/OpenUT2k4 · Revision 2ac3ed2
NOTICE.md GitHub · GloriousEggroll/OpenUT2k4 · Revision 2ac3ed2