Case study

OpenCivOne: rewriting the original Civilization

OpenCivOne rewrites the 1991 DOS Civilization game for desktop systems with .NET 8 and Avalonia. A virtual CPU runs assembly code still awaiting replacement, while rewritten portions use C#. The game currently needs the owner's original text, picture, and palette files.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-09
Evidence class: C2 code & docs, no demo or download

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Evidence

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

How evidence classes are assigned

Requirements & limits

Prerequisites: .NET 8 and Avalonia are used on Windows, Linux, and macOS desktops.
Prerequisites: A legally owned copy of the original game is required, including its .txt, .pic, and .pal files.
Limits: The rewrite is in progress; some assembly code still runs through a virtual CPU.
License: No licence stated on the project page.

Cite

BibTeX

@misc{opencivone-case,
  title = {{OpenCivOne: rewriting the original Civilization}},
  howpublished = {\url{https://codeberg.org/rhorvat/OpenCivOne}},
  url = {https://codeberg.org/rhorvat/OpenCivOne},
  urldate = {2026-11-09},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/opencivone-case/}}
}

Plain text

OpenCivOne: rewriting the original Civilization. https://codeberg.org/rhorvat/OpenCivOne (accessed 2026-11-09). Awesome REA entry: https://awesomerea.org/resources/opencivone-case/

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About this entry

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Primary sources

https://codeberg.org/rhorvat/OpenCivOne/src/commit/f3c20ccb9dd3f13b04befa0086e24c1c6906d1f8/README.md