What is Castlevania: Order of Ecclesia Decompilation?

Castlevania: Order of Ecclesia Decompilation is an open-source decompilation of Castlevania: Order of Ecclesia. Source code reconstructed from the original game's compiled binary, so the game can be understood, rebuilt and ported. The original game ran on Nintendo DS.

Do I need the original game files to run Castlevania: Order of Ecclesia Decompilation?

Yes. The project does not include the original game's assets, so you need your own copy.

Castlevania: Order of Ecclesia Decompilation

DecompilationHalted

Source code reconstructed from the original game's compiled binary, so the game can be understood, rebuilt and ported.

Based on Castlevania: Order of Ecclesia

Image of the original game, Castlevania: Order of Ecclesia. This project has no screenshots of its own yet.

Castlevania: Order of Ecclesia (original game, not this project) — Image of the original game, Castlevania: Order of Ecclesia. This project has no screenshots of its own yet.

Links, repository & details

About

A work-in-progress decompilation of Castlevania: Order of Ecclesia. The repository contains no game assets or assembly code, and you must own an existing copy of the game to build the ROM. The DS versions supported are USA, JPN, KOR and PAL, all Rev 0.

Getting started

Building requires your own copy of the game. A separate install guide is included in the repository.

Known issues & limitations

The Castlevania Dominus Collection versions on PC, Switch, PS5, and Xbox Series X/S are not supported.

What you need to run it

Original game files required. The project ships code only; you provide your own copy of the game (Nintendo DS version).

You must own an existing copy of the game.
Only the original DS versions are supported.

How to install

See INSTALL.md for instructions on installing the project.

Summarised from the project's README.

Additional notes

Unsupported versions: Only the original DS versions are supported; the Castlevania Dominus Collection versions are not.

FAQ

What is Castlevania: Order of Ecclesia Decompilation?: Castlevania: Order of Ecclesia Decompilation is an open-source decompilation of Castlevania: Order of Ecclesia. Source code reconstructed from the original game's compiled binary, so the game can be understood, rebuilt and ported. The original game ran on Nintendo DS.
Do I need the original game files to run Castlevania: Order of Ecclesia Decompilation?: Yes. The project does not include the original game's assets, so you need your own copy.