Case study

Touhou 8: an independent matching decompilation of Imperishable Night

Cirno-Labs/th08 reconstructs Touhou 8: Imperishable Night retail 1.00d in C++ and checks the build against the user's original game. The author reports byte matches for all game functions and the standalone executable, using the original MSVC toolchain, per-function comparisons and replay traces.

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: 0
Last commit: 2026-11-06
Language: C++
License (GitHub): GPL-3.0

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: A user-supplied retail Touhou 8 copy updated to version 1.00d.
Prerequisites: The documented build uses the original Visual C++ .NET 2002 toolchain under Wine on Linux.
Testing evidence: Byte identity and replay parity are author-reported results.
License: GPL-3.0 license.

Cite

BibTeX

@misc{cirno-labs-th08-case,
  title = {{Touhou 8: an independent matching decompilation of Imperishable Night}},
  howpublished = {\url{https://github.com/Cirno-Labs/th08}},
  url = {https://github.com/Cirno-Labs/th08},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/cirno-labs-th08-case/}}
}

Plain text

Touhou 8: an independent matching decompilation of Imperishable Night. https://github.com/Cirno-Labs/th08 (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/cirno-labs-th08-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · Cirno-Labs/th08 · Revision 3ee8536
orig/README.md GitHub · Cirno-Labs/th08 · Revision 3ee8536
docs/exe-parity.md GitHub · Cirno-Labs/th08 · Revision 3ee8536