# OpenJPOG: decompiling Jurassic Park: Operation Genesis and its Toshi engine

> OpenJPOG decompiles Toshi engine 1.0 and Jurassic Park: Operation Genesis. The Windows build uses Visual Studio 2019 or 2022. The README says the progress images do not yet mark every finished function.

- 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/AdventureT/OpenJPOG>
- Primary source: <https://github.com/AdventureT/OpenJPOG/blob/84b503e76d7a6250f4bbd7df807a50ec591660bb/README.md>
- Catalog page: <https://awesomerea.org/resources/openjpog/>
- Record JSON: <https://awesomerea.org/resources/openjpog/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/openjpog/index.md)

## Requirements & limits

- Clone with submodules, run GenerateProjects-VS2019.bat or GenerateProjects-VS2022.bat, and compile the generated solution.
- The README does not name a license.

## Primary sources

1. <https://github.com/AdventureT/OpenJPOG/blob/84b503e76d7a6250f4bbd7df807a50ec591660bb/README.md>

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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.