Case study

Mega Man 9: a matching WiiWare decompilation

Mega Man 9 is being reconstructed as C source for the US WiiWare release WR9E, with the original CodeWarrior toolchain used to match game functions. The build combines reconstructed units with split original objects and compares the resulting DOL against the target SHA-1. The author reports 1,760 exact game-function matches out of 2,941; source remains split by function.

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: 1
Last commit: 2026-10-18
Language: C
License (GitHub): CC0-1.0

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 user-owned US WiiWare WR9E main DOL is required; it is absent from the repository.
Prerequisites: The build requires CodeWarrior Wii/1.0, Python 3 and Ninja; non-Windows hosts need a Win32 wrapper.
Limits: The author reports that original translation units have not yet been recovered.
License: CC0-1.0 license.

Cite

BibTeX

@misc{mega-man-9-wiiware-decomp-case,
  title = {{Mega Man 9: a matching WiiWare decompilation}},
  howpublished = {\url{https://github.com/arceuss/mm9decomp}},
  url = {https://github.com/arceuss/mm9decomp},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/mega-man-9-wiiware-decomp-case/}}
}

Plain text

Mega Man 9: a matching WiiWare decompilation. https://github.com/arceuss/mm9decomp (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/mega-man-9-wiiware-decomp-case/

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About this entry

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Primary sources

README.md GitHub · arceuss/mm9decomp · Revision 3c57949