# OpenGuimo: GUIMO gameplay reimplemented in Godot

> OpenGuimo recreates the 1997 DOS platformer GUIMO in Godot 4.7, translating rules recovered from guimo.exe 2.2 into GDScript. It reads levels, pictures, sound and music from the user's guimo.jbc archive and documents several bugs found while examining the original executable.

- Type: Case study
- Targets: Binary · Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-09
- Added to the catalog: 2026-11-09
- Original resource: <https://gitlab.com/greyxor/openguimo>
- Primary source: <https://gitlab.com/greyxor/openguimo/-/blob/9ddb8ff2b068fa64c442a295999680e1024c581f6ea786a8758464588c06d614/README.md>
- Catalog page: <https://awesomerea.org/resources/openguimo-case/>
- Record JSON: <https://awesomerea.org/resources/openguimo-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/openguimo-case/index.md)

## Requirements & limits

- **Prerequisites:** Godot 4.7 standard edition is required to run from source.
- **Prerequisites:** A personal copy of GUIMO 2.2 and its guimo.jbc file is required.
- **Limits:** The score and ending are unfinished.
- **License:** OpenGuimo code is licensed under EUPL 1.2.

## Primary sources

1. <https://gitlab.com/greyxor/openguimo/-/blob/9ddb8ff2b068fa64c442a295999680e1024c581f6ea786a8758464588c06d614/README.md>

## More in Games

- [openh4: reimplementing the Heroes of Might and Magic IV engine](https://awesomerea.org/resources/openh4-case/index.md) · Case study
- [OpenHoW: rebuilding Hogs of War from its game data](https://awesomerea.org/resources/openhow-hogs-of-war-case/index.md) · Case study
- [OpenIGI: a C# engine reimplementation for Project I.G.I. and I.G.I. 2](https://awesomerea.org/resources/openigi-engine-case/index.md) · Case study
- [OpenInsaniquarium: reimplementing Insaniquarium Deluxe](https://awesomerea.org/resources/openinsaniquarium-case/index.md) · Case study
- [OpenJazz: a Jazz Jackrabbit 1 engine reimplementation](https://awesomerea.org/resources/openjazz-case/index.md) · Case study
- [OpenJKDF2: C reimplementation of Jedi Knight: Dark Forces II](https://awesomerea.org/resources/openjkdf2/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.