Case study

Underworld Revisited: reimplementing Ultima Underworld in Unity

Underworld Revisited reimplements Ultima Underworld: The Stygian Abyss (1992) in Unity. It reads the GOG or Steam copy. The checked GOG executable UW.EXE is 547,248 bytes. Windows releases are UnderworldRevisited-<version>-win64.zip and start with UR.exe. Linux releases since 0.3.0 are UnderworldRevisited-<version>-linux64.tar.gz and start with UR.x86_64. Saves use the installation folders UNDEROM1\SAVE1 through SAVE4.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-07
Evidence class: C1 partial scope or analysis entry

Stars: 38
Last commit: 2026-11-09
Language: C#
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Demo screenshot from the project's public documentation

Observed: Code, documentation, download and demo observed; a full-reconstruction candidate for manual Class 0 review.
Scope: Partial
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Windows 10 or newer, 64-bit, with DirectX 11, or 64-bit Linux with Vulkan or OpenGL 4. A source build uses Unity 6000.6.8f1. The launcher asks for the folder that contains game.gog or game.bin when it does not find an install.
License: MIT. Parts derived from other projects keep the licenses in THIRD_PARTY_NOTICES.md.

Cite

BibTeX

@misc{underworld-revisited,
  title = {{Underworld Revisited: reimplementing Ultima Underworld in Unity}},
  howpublished = {\url{https://github.com/PQMarine/UnderworldRevisited}},
  url = {https://github.com/PQMarine/UnderworldRevisited},
  urldate = {2026-11-07},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/underworld-revisited/}}
}

Plain text

Underworld Revisited: reimplementing Ultima Underworld in Unity. https://github.com/PQMarine/UnderworldRevisited (accessed 2026-11-07). Awesome REA entry: https://awesomerea.org/resources/underworld-revisited/

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Primary sources

README.md GitHub · PQMarine/UnderworldRevisited · Revision 7407116