Case study

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.

Targets: Binary · Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-09
Evidence class: C2 code & docs, no demo or download

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-09

How evidence classes are assigned

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.

Cite

BibTeX

@misc{openguimo-case,
  title = {{OpenGuimo: GUIMO gameplay reimplemented in Godot}},
  howpublished = {\url{https://gitlab.com/greyxor/openguimo}},
  url = {https://gitlab.com/greyxor/openguimo},
  urldate = {2026-11-09},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/openguimo-case/}}
}

Plain text

OpenGuimo: GUIMO gameplay reimplemented in Godot. https://gitlab.com/greyxor/openguimo (accessed 2026-11-09). Awesome REA entry: https://awesomerea.org/resources/openguimo-case/

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About this entry

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Primary sources

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