mh4u-decomp

Progress tracking for a matching decompilation of Monster Hunter 4 Ultimate (Nintendo 3DS, EU v1.1).

No source code, tools or game data are published yet. This repository only holds report.json, an objdiff progress report (function names, addresses, sizes and match percentages, grouped by class), which a GitHub Actions workflow uploads as the EU_v1.1_report artifact. ByteMatch reads this artifact from successful runs on main. The latest progress is also available as JSON.

Exact-match code and function counts come from the verified build. Fuzzy progress also counts the instruction similarity of compiled, unfinished C/C++ candidates, weighted by original function size. It measures generated machine code, not source-line alignment or behavioral equivalence. Scores are pinned to the current source, target, compiler and scoring inputs; stale scores receive no credit. Unfinished candidates do not add to perfect-match counts, and this report does not yet claim fully linked source completion.

Support

If you would like to help, you can donate to this Solana address:

fre8XznDmYdTsRVin7NdD4XHrKAEa5CLSVciwQ1u3MC

Donations go toward compute and hardware that speed up the project.

Disclaimer: donations are voluntary gifts, not purchases or investments. They come with no guarantees: no promised progress, timeline, release, rewards or refunds, and no obligation on either side. Transfers cannot be reversed, so check the address before sending. This project is not affiliated with or endorsed by Capcom, Nintendo or any other company.