Case study

Xenosaga Episode I: an early PS2 matching decompilation

Xenosaga-I-Decomp recovers C functions from the NTSC-U PS2 executable of Xenosaga Episode I and compares compiled bytes with the original ELF. Its tools split the executable, extract symbols and track decompilation progress. The author reports a byte-matching full executable build with a small fraction of functions rewritten in C; Japanese releases are planned.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 6
Last commit: 2026-02-19
Language: Python

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: A legally obtained NTSC-U game copy and its SLUS_204.69 ELF are required.
Prerequisites: The documented setup uses WSL2, Ubuntu 24 or native Linux and installs PS2DEV and EE-GCC tooling.
Limits: The C decompilation is at an early stage; Japanese versions are planned.
License: No licence file in the repository.

Cite

BibTeX

@misc{xenosaga-i-decomp-case,
  title = {{Xenosaga Episode I: an early PS2 matching decompilation}},
  howpublished = {\url{https://github.com/ValakTurtle/Xenosaga-I-Decomp}},
  url = {https://github.com/ValakTurtle/Xenosaga-I-Decomp},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/xenosaga-i-decomp-case/}}
}

Plain text

Xenosaga Episode I: an early PS2 matching decompilation. https://github.com/ValakTurtle/Xenosaga-I-Decomp (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/xenosaga-i-decomp-case/

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About this entry

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Primary sources

README.md GitHub · ValakTurtle/Xenosaga-I-Decomp · Revision ab6aaa2
CONTRIBUTING.md GitHub · ValakTurtle/Xenosaga-I-Decomp · Revision ab6aaa2