# torch2424/wasmboy

Game Boy / Game Boy Color Emulator Library, 🎮written for WebAssembly using AssemblyScript. 🚀Demos built with Preact and Svelte. ⚛️

Repository: https://github.com/torch2424/wasmboy
Canonical: https://ross.abutalabs.com/products/wasmboy
Homepage: https://wasmboy.app/
Language: WebAssembly
License: GPL-3.0
License Family: copyleft
Topics: gameboy, preact, gameboy-color, assemblyscript, emulator, web-assembly, gameboy-emulator, webassembly, wasm
Last push: 2023-03-04T02:32:59+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3143, "days_push": 1279, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1498, forks 75 (observed 2026-08-28T04:04:53.986274+00:00)

## What it is
WasmBoy is a Game Boy and Game Boy Color emulator library written in WebAssembly using AssemblyScript, distributed via npm and importable into both browser and Node.js projects. It renders to a responsive HTML5 canvas, plays audio through the Web Audio API, and ships with save states, gamepad/keyboard input, parallelized rendering via Web Workers, and a built-in debugger with tile and background map visualizers.

## Use cases
- play gameboy games in the browser
- embed a game boy emulator in my web app
- gameboy color emulator library for javascript
- run a gameboy emulator in node
- add save states and gamepad support to a browser emulator
- debug gameboy roms with a tile data visualizer
- emulate retro handheld games using webassembly

## When to choose
- You want to embed Game Boy / Game Boy Color emulation into a web app or Node project as an npm dependency
- You need browser-side emulation with Web Workers for parallel rendering and configurable performance options for lower-end devices
- You want built-in extras like in-game saves, save states, responsive gamepad/keyboard input, and a debugger UI
- You want to see or build demos in frameworks like Preact or Svelte

## When to avoid
- You need highly accurate, bug-free cycle-accurate emulation - the project is below 1.0.0 and self-describes as not very accurate
- You need emulation of consoles other than the Game Boy / Game Boy Color
- You want a turnkey end-user desktop emulator application rather than a JavaScript/WASM library
- You need native (non-browser, non-Node) emulation targets outside the WebAssembly/JavaScript ecosystem

## Facets
- artifact type: library
- maturity: active
- function: simulation, game, graphics, audio-processing
- domain: gaming-tools, web-development, cross-platform
- platform: browser, wasm, cross-platform
- tags: gameboy, gameboy-color, emulator, webassembly, assemblyscript, save-states, web-workers, html5-canvas, web-audio-api, gamepad-input, debugger, preact-demo, svelte-demo, npm-library, game-development, nodejs

## Member repositories
- torch2424/wasmboy (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:53.986274+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:33:06.674048+00:00, confidence not recorded.
  - readme: https://github.com/torch2424/wasmboy (fetched 2026-08-28T04:04:53.986274+00:00, sha 94d57a9ac52d)
  - homepage: https://wasmboy.app/ (fetched 2026-08-29T11:38:17.645627+00:00, sha 048a2721cb43)
- Data as of 2026-08-30T08:39:29.467469+00:00.