GBGame Boy · 1992 · action platformer
Batman: Return of the Joker
Batman: Return of the Joker (Game Boy, 1992) has an open-source reimplementation, Fabulu/Mixup.
Data checked 2026-10-12 · unbaked registry
Every linked repository here is new and has little community signal yet. Read the code before running anything it offers for download.
Projects
Hand-translating console games from disassembly into readable, modifiable JavaScript, not emulation. Every ROM routine becomes a JS function you own, verified frame-by-frame against the real ROM runn…
Hand-translated from disassembly into readable JavaScript (no CPU interpreter); complete title-to-credits, verified bit-exact frame-by-frame against a headless emulator (repo also covers NES Gradius and PGM DoDonPachi DaiOuJou)
What you need
You need your own copy of the game: these projects ship code only.
More on Game Boy
GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.