Case study

open-spyro: matching decompilation of Spyro the Dragon

open-spyro rebuilds Spyro the Dragon's PlayStation executable and 37 overlays byte for byte from matched C and retained original assembly. Its build uses a locked GCC 2.7.2 toolchain and per-function instruction diffs. The author reports that all counted game-code bytes match; readability cleanup continues.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 8
Last commit: 2026-11-08
Language: Assembly
License (GitHub): CC0-1.0

GitHub data as of 2026-11-10

Copy as Markdown View JSON Cite

Evidence

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

How evidence classes are assigned

Requirements & limits

Prerequisites: Supply an original Spyro the Dragon disc image containing the supported SCUS_942.28 release.
Prerequisites: Docker and uv are required for the documented matching build; ISO creation and play also use mkpsxiso, dumpsxiso and DuckStation.
Limits: The author reports 100% matching for counted game-code bytes; readability cleanup remains in progress.
License: CC0-1.0 license.

Cite

BibTeX

@misc{open-spyro-case,
  title = {{open-spyro: matching decompilation of Spyro the Dragon}},
  howpublished = {\url{https://github.com/theMagicalKarp/open-spyro}},
  url = {https://github.com/theMagicalKarp/open-spyro},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/open-spyro-case/}}
}

Plain text

open-spyro: matching decompilation of Spyro the Dragon. https://github.com/theMagicalKarp/open-spyro (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/open-spyro-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

README.md GitHub · theMagicalKarp/open-spyro · Revision ce2e6a5
tools/open-spyro/README.md GitHub · theMagicalKarp/open-spyro · Revision ce2e6a5