# Underworld Exhumed: reconstructing Ultima Underworld I and II

> Pairs reconstructed DOS sources with native ports of Ultima Underworld I and II. The upstream documents Exhume-based byte-matching builds, routine-level comparisons and recorded-session replay against DOS.

- Type: Case study
- Targets: Binary · Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-10-20
- Added to the catalog: 2026-10-20
- Original resource: <https://github.com/abedegno/underworld-exhumed>
- Primary source: <https://github.com/abedegno/underworld-exhumed/blob/e5deadd6945b492636aadccc14f52caa908b4186/README.md>
- Catalog page: <https://awesomerea.org/resources/underworld-exhumed-case/>
- Record JSON: <https://awesomerea.org/resources/underworld-exhumed-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/underworld-exhumed-case/index.md)

## Requirements & limits

- Native ports target macOS, Windows and Linux. Playing and checking against the originals requires your own matching game files (the README targets GOG releases); byte-matching builds additionally require the documented Turbo C++ 1.01 and TASM 2.0 inputs. Native-port compilation itself does not require game data.
- The MIT license covers the project’s own tools, documentation and added annotations/structure. NOTICE explicitly excludes rights in the original games and derived game code; optional MT-32 playback requires separately obtained ROMs.
- Recorded sessions and routine tests provide bounded upstream evidence. Full tests require licensed inputs absent from the public repository.

## Primary sources

1. <https://github.com/abedegno/underworld-exhumed/blob/e5deadd6945b492636aadccc14f52caa908b4186/README.md>
2. <https://github.com/abedegno/underworld-exhumed/blob/e5deadd6945b492636aadccc14f52caa908b4186/docs/PORT.md>
3. <https://github.com/abedegno/underworld-exhumed/blob/e5deadd6945b492636aadccc14f52caa908b4186/docs/BUILDING.md>
4. <https://github.com/abedegno/underworld-exhumed/blob/e5deadd6945b492636aadccc14f52caa908b4186/LICENSE>
5. <https://github.com/abedegno/underworld-exhumed/blob/e5deadd6945b492636aadccc14f52caa908b4186/NOTICE>
6. <https://github.com/abedegno/underworld-exhumed/blob/e5deadd6945b492636aadccc14f52caa908b4186/Makefile>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.