# OpenMW: replacing Morrowind’s engine while reusing original content

> Provides an independent engine for playing Morrowind and an alternative editor, OpenMW-CS. It loads original game content through its own runtime and documents script and mod compatibility differences; it is an engine replacement rather than a recovered Bethesda source tree.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-10-17
- Added to the catalog: 2026-10-17
- Original resource: <https://github.com/OpenMW/openmw>
- Primary source: <https://github.com/OpenMW/openmw/blob/5fdc0f1c4d1d07575f9b360b8cf1d6562232bf8e/README.md>
- Catalog page: <https://awesomerea.org/resources/openmw-engine-case/>
- Record JSON: <https://awesomerea.org/resources/openmw-engine-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/openmw-engine-case/index.md)

## Requirements & limits

- **Prerequisites:** Playing Morrowind requires the user’s original game data, including Morrowind.esm and the installation settings. Tribunal and Bloodmoon are optional expansions; the installation guide recommends both for best results. OpenMW-CS can also support separately authored projects.
- **Prerequisites:** The source configuration uses CMake 3.16+, C++20, SDL2 2.26+, OpenSceneGraph 3.6.5+, Boost 1.70+ and OpenAL; launcher/editor/wizard builds use Qt6. Additional dependencies depend on enabled components.
- **Scope:** The pinned README and build files identify version 0.52.0; this is a source-snapshot identifier. The README lists Windows 10+, macOS 14.8+ and Linux, with no 32-bit support.
- **Testing evidence:** The project reports the main quests as completable, but warns about side quests and mods that depend on original-engine quirks. Example Suite integration tests and the separate Morrowind-content test setup cover selected behavior.
- **License:** The official GitHub mirror points to the main GitLab project. GPLv3 covers project code, with separate font/dependency terms and original-game data rights.

## Primary sources

1. <https://github.com/OpenMW/openmw/blob/5fdc0f1c4d1d07575f9b360b8cf1d6562232bf8e/README.md>
2. <https://github.com/OpenMW/openmw/blob/5fdc0f1c4d1d07575f9b360b8cf1d6562232bf8e/CMakeLists.txt>
3. <https://github.com/OpenMW/openmw/blob/5fdc0f1c4d1d07575f9b360b8cf1d6562232bf8e/LICENSE>
4. <https://github.com/OpenMW/openmw/blob/5fdc0f1c4d1d07575f9b360b8cf1d6562232bf8e/docs/source/manuals/installation/install-game-files.rst>
5. <https://github.com/OpenMW/openmw/blob/5fdc0f1c4d1d07575f9b360b8cf1d6562232bf8e/scripts/data/morrowind_tests/README.md>
6. <https://github.com/OpenMW/openmw/blob/5fdc0f1c4d1d07575f9b360b8cf1d6562232bf8e/CI/run_integration_tests.sh>

## More in Games

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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.