# Dragon Quest IX: matching Nintendo DS decompilation

> This project is a 1:1 disassembly and decompilation of Dragon Quest IX: Sentinels of the Starry Skies for the Nintendo DS. The primary focus is the USA and Japanese versions. European builds are produced from the USA sources.

- 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/DQIX/dqix-decomp>
- Primary source: <https://github.com/DQIX/dqix-decomp/blob/6fb9b8b0918f0a03d579dd0facad814139d1f317/README.md>
- Catalog page: <https://awesomerea.org/resources/dqix-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/dqix-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/dqix-decomp-case/index.md)

## Requirements & limits

- Python 3.11 or newer, GCC 9 or newer, and Ninja.
- Place a clean ROM in extract as baserom_dqix_usa.nds, baserom_dqix_jpn.nds, or baserom_dqix_eur.nds. USA, Japanese, and European ROMs are supported.
- The README names no license.

## Primary sources

1. <https://github.com/DQIX/dqix-decomp/blob/6fb9b8b0918f0a03d579dd0facad814139d1f317/README.md>

## More in Games

- [Dragon Warrior 3: a matching Game Boy Color disassembly](https://awesomerea.org/resources/dragon-warrior-3-gbc-disassembly-case/index.md) · Case study
- [Dragon Warrior IV: a byte-exact NES disassembly](https://awesomerea.org/resources/dragon-warrior-iv-nes-disassembly-case/index.md) · Case study
- [Dragon Warrior: a commented NES disassembly](https://awesomerea.org/resources/dragon-warrior-disassembly-case/index.md) · Case study
- [Driver 1 decomp: matching Driver and porting it to Linux](https://awesomerea.org/resources/driver-1-decomp-case/index.md) · Case study
- [Duck Hunt Disassembly: reconstructing the World release in assembly](https://awesomerea.org/resources/duck-hunt-disassembly-case/index.md) · Case study
- [Duke Nukem Zero Hour: decompiling the Nintendo 64 game](https://awesomerea.org/resources/duke-nukem-zero-hour/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.