Case study

Rhythm Tengoku Arcade: SH-4 decompilation and asset-format reconstruction

Reconstructs parts of Rhythm Tengoku Arcade's SH-4 program as C and assembly and implements round-trip tools for DTPK audio packages, STX textures and layered data ROMs. The author reports exact rebuilds for selected functions and asset packages while the game-code reconstruction remains partial.

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: 2026-10-03
Language: Assembly

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: User-owned dumps of the four named ROM chips.
Prerequisites: Python 3 with Pillow and NumPy; Docker is needed for C matching targets.
Limits: The author reports 1,652 byte-exact functions among 1,714 translated functions, representing 4.00% of game-code bytes.
License: No licence file in the repository.

Cite

BibTeX

@misc{rhythm-tengoku-arcade-decomp-case,
  title = {{Rhythm Tengoku Arcade: SH-4 decompilation and asset-format reconstruction}},
  howpublished = {\url{https://github.com/Toritan123/rhytngk-arcade-decomp}},
  url = {https://github.com/Toritan123/rhytngk-arcade-decomp},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/rhythm-tengoku-arcade-decomp-case/}}
}

Plain text

Rhythm Tengoku Arcade: SH-4 decompilation and asset-format reconstruction. https://github.com/Toritan123/rhytngk-arcade-decomp (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/rhythm-tengoku-arcade-decomp-case/

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Primary sources

README.md GitHub · Toritan123/rhytngk-arcade-decomp · Revision 5c02f65