# Digimon World DS: matching Nintendo DS decompilation

> Digimon World DS reconstructs the North American Nintendo DS game's ARM9 program and overlays as matching C source. Its dsd-based build takes code still awaiting decompilation from the user's ROM, links recovered functions into the modules and checks the output byte for byte; the author reports 2,386 of 3,665 game functions in C as of October 2026.

- 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/ReGame-Labs/dwds_decomp>
- Primary source: <https://github.com/ReGame-Labs/dwds_decomp/blob/91efd17c4c05ce106ce0f973155149d23d9de519/README.md>
- Catalog page: <https://awesomerea.org/resources/digimon-world-ds-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/digimon-world-ds-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/digimon-world-ds-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** Supply the North American ADNE ROM; whole-ROM hash matching also requires a DS ARM7 BIOS file.
- **Prerequisites:** The documented Linux build uses Python, Ninja, dsd, Metrowerks mwccarm 1.2/sp4 and related tools.
- **Limits:** The decompilation is incomplete; unrecovered code is delinked from the original ROM.
- **License:** MIT license.

## Primary sources

1. <https://github.com/ReGame-Labs/dwds_decomp/blob/91efd17c4c05ce106ce0f973155149d23d9de519/README.md>
2. <https://github.com/ReGame-Labs/dwds_decomp/blob/91efd17c4c05ce106ce0f973155149d23d9de519/extract/README.md>

## More in Games

- [Digimon World: a PS1 decompilation with binary comparison](https://awesomerea.org/resources/digimon-world-decomp-case/index.md) · Case study
- [Digital Devil Saga: matching decompilation of two PS2 games](https://awesomerea.org/resources/dds-decomp/index.md) · Case study
- [Dino Crisis 2 Decompilation: a matching PlayStation reconstruction](https://awesomerea.org/resources/dino-crisis-2-decomp-case/index.md) · Case study
- [Dinosaur Planet: byte-exact Nintendo 64 decompilation](https://awesomerea.org/resources/dinosaur-planet-decomp/index.md) · Case study
- [Dogcomp: a PAL PlayStation 2 decompilation of Dog's Life](https://awesomerea.org/resources/dogs-life-decomp-case/index.md) · Case study
- [Donkey Kong 64: matching N64 decompilation](https://awesomerea.org/resources/dk64-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.