# Mega Man X4: byte-matching PlayStation source reconstruction

> This is a matching decompilation of Mega Man X4 for PlayStation. The same C source builds byte-matching executables for the US release SLUS_005.61, the Japanese SLPS_009.02, and the European SLES_011.76, plus a native Linux port for the US and Japanese versions. The Sega Saturn build is non-matching.

- Type: Case study
- Targets: Game
- Category: Independent reconstruction cases
- Relationship: Independent reconstruction project
- Sources reviewed: 2026-11-07
- Added to the catalog: 2026-11-09
- Original resource: <https://github.com/sozud/mmx4>
- Primary source: <https://github.com/sozud/mmx4/blob/4e16dfc7c06597fd5719dd112654d8cf85d343c2/README.md>
- Catalog page: <https://awesomerea.org/resources/mmx4-decomp/>
- Record JSON: <https://awesomerea.org/resources/mmx4-decomp/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/mmx4-decomp/index.md)

## Requirements & limits

- The documented package install is binutils and gcc for mipsel, plus ninja. Then pip install -r requirements.txt, update submodules, and run compiler.sh.
- The README names no license.

## Primary sources

1. <https://github.com/sozud/mmx4/blob/4e16dfc7c06597fd5719dd112654d8cf85d343c2/README.md>

## More in Games

- [Mega Man X5: a matching PlayStation decompilation](https://awesomerea.org/resources/mega-man-x5-decomp-case/index.md) · Case study
- [Mega Man X6: matching PlayStation code and overlay decompilation](https://awesomerea.org/resources/mega-man-x6-matching-decomp-case/index.md) · Case study
- [memory of alessa: an in-progress Silent Hill 3 PS2 matching decompilation](https://awesomerea.org/resources/silent-hill-3-memory-of-alessa-decomp-case/index.md) · Case study
- [meteor-decomp: FINAL FANTASY XIV 1.23b client and network decompilation](https://awesomerea.org/resources/meteor-ffxiv-decomp-case/index.md) · Case study
- [Metroid II: byte-matching Game Boy disassembly](https://awesomerea.org/resources/metroid-ii-disasm/index.md) · Case study
- [Metroid Prime: the PrimeDecomp matching GameCube decompilation](https://awesomerea.org/resources/primedecomp-metroid-prime-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.