# Metroid II: byte-matching Game Boy disassembly

> This disassembles Metroid II: Return of Samus for the Game Boy. The assembled ROM has MD5 9639948ad274fa15281f549e5f9c4d87. The documented tools are rgbds 1.0.1 and Python 3.13.

- 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/metroidret/M2RoS>
- Primary source: <https://github.com/metroidret/M2RoS/blob/031aea34cb1a6c6aae0f27b55dd2a6fe7c36b810/readme.md>
- Catalog page: <https://awesomerea.org/resources/metroid-ii-disasm/>
- Record JSON: <https://awesomerea.org/resources/metroid-ii-disasm/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/metroid-ii-disasm/index.md)

## Requirements & limits

- Run extract.py on a copy of the game, then make all, build.bat, or build.py. Output goes to out/.
- The README does not name a license.

## Primary sources

1. <https://github.com/metroidret/M2RoS/blob/031aea34cb1a6c6aae0f27b55dd2a6fe7c36b810/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.