# Valkyrie Profile: a partial matching PlayStation decompilation

> Valkyrie Profile decomp reconstructs parts of the Japanese Rev 1 PlayStation game as C that compiles to the original bytes. It covers the main executable and four overlays, with remaining functions retained as assembly. The author reports byte-matching outputs for all five units and warns that a build from a fresh clone may need local reference files.

- 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/waterrr1389/valkyrie-profile-decomp>
- Primary source: <https://github.com/waterrr1389/valkyrie-profile-decomp/blob/264453479b9c9329fa78b4bbec657f5fa2a49e7d/README.md>
- Catalog page: <https://awesomerea.org/resources/valkyrie-profile-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/valkyrie-profile-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/valkyrie-profile-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** User-supplied Japanese Rev 1 disc images are required.
- **Prerequisites:** The documented GCC 2.7.2 PS1 toolchain, maspsx, binutils and Python environment are required.
- **Limits:** Fresh-clone builds are not guaranteed; make split refers to an uncommitted work/asm_ref directory.
- **License:** CC0 1.0 covers repository code.

## Primary sources

1. <https://github.com/waterrr1389/valkyrie-profile-decomp/blob/264453479b9c9329fa78b4bbec657f5fa2a49e7d/README.md>

## More in Games

- [Warblade Service Release: decompiling Warblade 1.34 and replacing PTK with SDL](https://awesomerea.org/resources/warblade-service-release-case/index.md) · Case study
- [Wario Land 4: a matching US/EU and Japanese GBA decompilation](https://awesomerea.org/resources/tsilaallaoui-warioland4-case/index.md) · Case study
- [Wario Land 4: rebuilding US/EU and Japanese GBA ROMs](https://awesomerea.org/resources/wario-land-4-decomp-case/index.md) · Case study
- [wc2-re: a matching Wing Commander II reconstruction and SDL2 port](https://awesomerea.org/resources/wc2-re-case/index.md) · Case study
- [WCW Nitro: a checksum-checked PlayStation decompilation](https://awesomerea.org/resources/wcw-nitro-decomp-case/index.md) · Case study
- [Whippy: matching decompilation of Kirby's Return to Dream Land](https://awesomerea.org/resources/whippy-kirby-return-to-dream-land-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.