# gh3-decomp: matching Guitar Hero III PS2 decompilation

> gh3-decomp reconstructs the USA PlayStation 2 release of Guitar Hero III: Legends of Rock as C++ compiled with the game's original compiler. Its build extracts the executable from the user's disc image, splits it, and compares the linked result byte for byte; the author reports that 28.78% of game code is matching C++.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/Ketbome/gh3-decomp>
- Primary source: <https://github.com/Ketbome/gh3-decomp/blob/5f24db7eb69ed9f3772bfe9124927670cf42405f/README.md>
- Catalog page: <https://awesomerea.org/resources/gh3-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/gh3-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/gh3-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** A personal copy of the USA SLUS-21672 disc image is required.
- **Prerequisites:** Python 3.9+, 7z, ninja, curl and the setup script's PS2 toolchain are required; the project supports macOS arm64 and Linux x86-64.
- **Limits:** The author reports 28.78% of game code in matching C++; remaining functions use original assembly during the build.
- **License:** GNU AGPL v3.0.

## Primary sources

1. <https://github.com/Ketbome/gh3-decomp/blob/5f24db7eb69ed9f3772bfe9124927670cf42405f/README.md>

## More in Games

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- [GoldenEye 007: matching Nintendo 64 decompilation for three releases](https://awesomerea.org/resources/goldeneye-007-matching-decomp-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.