# Yu-Gi-Oh! Forbidden Memories: matching PS1 decompilation

> Reconstructs the NTSC-U PlayStation release of Yu-Gi-Oh! Forbidden Memories as C compiled with the original PsyQ toolchain. The author reports byte-identical output for all 1,120 in-scope game functions; PsyQ library code and original hand-written assembly remain outside that C scope.

- 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/MaChInEgUn3/ygofm-decomp>
- Primary source: <https://github.com/MaChInEgUn3/ygofm-decomp/blob/1b620d1cbb6faff5be516e018b46d7001410fd31/README.md>
- Catalog page: <https://awesomerea.org/resources/yu-gi-oh-forbidden-memories-ps1-decomp-case/>
- Record JSON: <https://awesomerea.org/resources/yu-gi-oh-forbidden-memories-ps1-decomp-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/yu-gi-oh-forbidden-memories-ps1-decomp-case/index.md)

## Requirements & limits

- **Prerequisites:** A legally owned disc with SLUS_014.11 and a separate PsyQ SDK copy are required.
- **Prerequisites:** The build uses PsyQ 4.5 cc1psx, MIPS binutils, maspsx, decomp-permuter, m2c, Python and splat64[mips].
- **Scope:** The author reports matching for 1,120 in-scope game functions; PsyQ library functions and original hand-written assembly remain outside that scope.
- **License:** No licence file in the repository.

## Primary sources

1. <https://github.com/MaChInEgUn3/ygofm-decomp/blob/1b620d1cbb6faff5be516e018b46d7001410fd31/README.md>

## More in Games

- [Yu-Gi-Oh! GX Tag Force: matching PSP decompilation with REA analysis](https://awesomerea.org/resources/tagforce-decomp-case/index.md) · Case study
- [Yu-Gi-Oh! The Duelists of the Roses: a byte-matched PS2 decompilation](https://awesomerea.org/resources/duelists-of-the-roses-decomp-case/index.md) · Case study
- [Yu-Gi-Oh! WCT 2006: GBA ROM disassembly](https://awesomerea.org/resources/ygowct06-case/index.md) · Case study
- [Zelda II: Famicom Disk System disassembly](https://awesomerea.org/resources/zelda-ii-fds-disassembly-case/index.md) · Case study
- [Zelda: The Wand of Gamelon: a matching CD-i decompilation](https://awesomerea.org/resources/zelda-wand-of-gamelon-decomp-case/index.md) · Case study
- [Zoids Legacy: byte-matched GBA code reconstruction](https://awesomerea.org/resources/zoids-legacy-decomp/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.