Gradius

Gradius (Arcade, 1985) has an open-source reimplementation, Fabulu/Mixup, and 3 other public projects, including a full disassembly. An agent environment already wraps it.

Data checked 2026-10-12 · unbaked registry

Projects

Mixupnew, unvetted

ReimplementationJavaScript (hand-translated from disassembly)2 starspushed 2026-09-07custom license

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…

all seven stages play and loop; diffed field-by-field vs headless emulator; no known divergences ()

antxiko Nemesis-disassemblynew, unvetted

DisassemblyZ80 (byte-exact reassembly, sha256-checked), Python tools, openMSX VR…2 starspushed 2026-09-15custom license

Byte-exact, reproducible disassembly of Nemesis / Gradius (Konami RC-742, 1986, MSX1). 128 KB MegaROM, 100% explained, commented, with the twelve stage maps drawn from the ROM.

Commented disassembly reassembling byte-for-byte (part of a ~63-title MSX series, Aug-Oct 2026; WIP for War in Middle Earth).

GradiusRemake

Reimplementation0 starspushed 2026-07-17no license

Remake of the game Gradius (NES - 1986)

dropped from awesome-decomp-games: awesome-game-remakes-only, <

nemesionew, unvetted

ReimplementationPython, Pyxel (rule-by-rule reimplementation)0 starspushed 2026-10-09custom licenserelease v0.1.0

Konami's Nemesis (MSX, 1986) reimplemented rule by rule in Python and Pyxel. Bring your own ROM; one free stage included. Not affiliated with Konami.

2026; one free stage, bring your ROM ()

What you need

You need your own copy of the game: these projects ship code only.

Agent environments

Farama-Foundation/stable-retro/tree/main/stable_retro/data/s

More on Arcade

GameMethodYearStarsLast push

ARCStreet Fighter II: Champion EditionAgent environment19926.5k2025-04-13 ARCOut RunSource releaseReimplementation+219868792026-10-11 ARCDefenderSource releaseStatic recomp+219816432026-07-20 ARCSpace InvadersReimplementationDisassembly19787982022-09-18 ARCPac-ManSource releaseMatching decomp+519805942026-10-10 ARCOmega RaceSource releaseAI-assisted decomp+119815142026-09-17 ARCWizard of WorSource releaseDisassembly19805142026-09-20 ARCOutRunReimplementation19868792023-12-26

Found via antxiko.github.io/, SubmitGame/awesome-decomp-games/blob/main/data/d, radek-sprta/awesome-game-remakes

GitHub data checked 2026-10-12. Notes are summaries from the research pass; the project pages are the authority.