Castlevania: Symphony of the Night Decompilation

About

This is a work-in-progress decompilation project that aims to reconstruct the original source code of Castlevania: Symphony of the Night through static and dynamic analysis of its PS1/PSP/Saturn binaries, producing code that compiles byte-for-byte identical to the original. It currently supports four versions of the game: the US PS1 release (SLUS-00067), an unreleased Japanese PS1 build, the European PSP release bundled with Dracula X Chronicles, and the Saturn port. The repository does not include any game assets or assembly code — a legitimately owned copy of the game is required to extract what's needed to build it.

How it differs from the original

As a byte-for-byte matching decompilation rather than a reimplementation, the project aims to produce code functionally identical to the original binaries rather than a modified or expanded version of the game.

Getting started

A build guide and a decompilation guide are linked from the project, along with an online progress tracker; a legitimately owned copy of the original game is required to supply the assets and data needed to compile it.

What you need to run it

Modding & tools

• The project credits and builds on several open-source decompilation tools, including mips2c, splat, asm-differ, decomp-permuter, maspsx, decomp.me, and frogress.

FAQ

What is Castlevania: Symphony of the Night Decompilation?

Castlevania: Symphony of the Night Decompilation is an open-source decompilation of Castlevania: Symphony of the Night. Source code reconstructed from the original game's compiled binary, so the game can be understood, rebuilt and ported. The original game ran on PlayStation, PSP and Saturn.

Do I need the original game files to run Castlevania: Symphony of the Night Decompilation?

Yes. The project does not include the original game's assets, so you need your own copy. Decompilation project; prior copy of the game required to extract necessary assets.