Case study

Digimon Digital Card Battle: a three-region matching decompilation

dcb_decomp reconstructs the PlayStation Digimon Digital Card Battle executable and overlays in C and assembly for US, Japanese and European releases. The author reports byte-identical builds of game code and data from one source tree, measured with objdiff. The repository records remaining source-form workarounds and assembly in linked PsyQ library code.

Targets: Game
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06

Stars: 7
Last commit: 2026-10-11
Language: C
License (GitHub): MIT

GitHub data as of 2026-11-09

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Requirements & limits

Prerequisites: Supply your own copy of the game for the chosen region.
Limits: The author reports fully matching game code and data; some PsyQ library functions remain in assembly.
License: MIT licence.

Cite

BibTeX

@misc{dcb-decomp-case,
  title = {{Digimon Digital Card Battle: a three-region matching decompilation}},
  howpublished = {\url{https://github.com/ReGame-Labs/dcb_decomp}},
  url = {https://github.com/ReGame-Labs/dcb_decomp},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/dcb-decomp-case/}}
}

Plain text

Digimon Digital Card Battle: a three-region matching decompilation. https://github.com/ReGame-Labs/dcb_decomp (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/dcb-decomp-case/

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About this entry

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Primary sources

README.md GitHub · ReGame-Labs/dcb_decomp · Revision 6c9caf1
TODO.md GitHub · ReGame-Labs/dcb_decomp · Revision 6c9caf1