# OpenIsolation: reconstructing Alien: Isolation libraries

> OpenIsolation is an early-stage project to reverse-engineer Alien: Isolation's libraries and game code. Current work centers on the CATHODE core library; its C++ source and notes cover original binaries, symbols, class-layout recovery, and platform variants.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-07
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/OpenIsolation/OpenIsolation>
- Primary source: <https://github.com/OpenIsolation/OpenIsolation/blob/b3e195f1850278f5b65eef84cb832ed14394636b/README.md>
- Catalog page: <https://awesomerea.org/resources/openisolation-case/>
- Record JSON: <https://awesomerea.org/resources/openisolation-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/openisolation-case/index.md)

## Requirements & limits

- A legally owned copy of Alien: Isolation is required.
- The project is in an early stage, with active work concentrated on CATHODE.

## Primary sources

1. <https://github.com/OpenIsolation/OpenIsolation/blob/b3e195f1850278f5b65eef84cb832ed14394636b/README.md>
2. <https://github.com/OpenIsolation/OpenIsolation/blob/b3e195f1850278f5b65eef84cb832ed14394636b/Documentation/AlienIsolation_General_TechnicalDetails.md>

## More in Games

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- [OUO: a reconstructed Ultima Online demo server](https://awesomerea.org/resources/ouo-case/index.md) · Case study
- [Outlaw: a reverse-engineered Atari 2600 source listing](https://awesomerea.org/resources/outlaw-atari-2600-disassembly-case/index.md) · Case study

## 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.