Case study

Infernal Runner JS: reconstructing the CPC game's bytecode engine

Infernal Runner JS ports the Amstrad CPC game Infernal Runner to JavaScript from analysis of its disk image and Z80 code. It reimplements a cooperative-threaded interpreter for the game's 28 bytecode opcodes, loads the original disk image for graphics and scripts, and includes a bytecode disassembler and Z80 disassembly.

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: 8
Last commit: 2019-12-14
Language: Assembly
Status: Archived

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a demo observed; no download method found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: Provide the original .dsk image for its bytecode and graphics.
License: No licence file in the repository.

Cite

BibTeX

@misc{infernal-runner-js-case,
  title = {{Infernal Runner JS: reconstructing the CPC game's bytecode engine}},
  howpublished = {\url{https://github.com/cyxx/infernal_js}},
  url = {https://github.com/cyxx/infernal_js},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/infernal-runner-js-case/}}
}

Plain text

Infernal Runner JS: reconstructing the CPC game's bytecode engine. https://github.com/cyxx/infernal_js (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/infernal-runner-js-case/

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Primary sources

README.md GitHub · cyxx/infernal_js · Revision d1c9a98