# Illbleed decomp: reconstructing the Dreamcast executable

> Illbleed decomp reconstructs the Japanese Dreamcast game's executable from a user-supplied disc. Its scripts generate per-function SH-4 assembly, maps and model information, then compare rebuilt bytes and test recovered C for behavioral equivalence. The author reports 2,049 named functions and no completed C functions in the published progress table.

- 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/consolesplayingconsoles/illbleed-decomp>
- Primary source: <https://github.com/consolesplayingconsoles/illbleed-decomp/blob/6fb148fb2b8c74f2064e5271a8ff6798911a92c0/README.md>
- Catalog page: <https://awesomerea.org/resources/illbleed-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/illbleed-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/illbleed-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** An ILLBLEED T45601M V1.003 Japanese disc image in .gdi format with its track files is required.
- **Prerequisites:** Python 3, a Katana SDK, and Docker are required; Linux x86_64 can use wibo instead of Docker.
- **Limits:** The published progress table lists no completed C functions.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/consolesplayingconsoles/illbleed-decomp/blob/6fb148fb2b8c74f2064e5271a8ff6798911a92c0/README.md>

## More in Games

- [Imperialism: reconstructing the 1997 game in C++ and Rust](https://awesomerea.org/resources/imperialism-decomp-case/index.md) · Case study
- [Indiana Jones and the Infernal Machine: a matching C decompilation](https://awesomerea.org/resources/infernal-machine-matching-decomp-case/index.md) · Case study
- [Jackal: commented disassembly of the NES game](https://awesomerea.org/resources/nes-jackal-disasm/index.md) · Case study
- [Jawbreaker: an annotated Atari VCS disassembly that compiles to the exact ROM](https://awesomerea.org/resources/jawbreaker-atari-vcs-disassembly-case/index.md) · Case study
- [Jet Set Radio Future: early matching Xbox decompilation](https://awesomerea.org/resources/jsrf-matching-decomp-case/index.md) · Case study
- [Kanken Training 2: matching reconstruction of a Nintendo 3DS executable](https://awesomerea.org/resources/kanken-training-2-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.