EmulatorJS/EmulatorJS
A web-based frontend for RetroArch observed · 2026-08-28
Health v2 · maintenance only
77/100
- Activity 96
- Release rhythm 40
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 20
- age_days: 1976
- days_rel: 424
- days_push: 26
- n_releases_24m: 4
Adoption not part of the score
4119 stars · 963 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
EmulatorJS is a JavaScript library that embeds RetroArch (compiled to WebAssembly) into any website, enabling browser-based emulation of many retro consoles like NES, SNES, Game Boy, N64, PlayStation, and Sega systems. It is designed as an embeddable plugin rather than a standalone application, with a public CDN, customizable UI, and multilingual support.
Use cases
- play retro console games in the browser
- embed an emulator into my website
- add a retro game player to a web page
- run NES SNES GameBoy ROMs without installing software
- host a self-hosted browser game emulation library
- embed emulator in React single page app via iframe
When to choose
- you want to embed retro game emulation into a website with a few lines of code
- you need broad console support via libretro cores without managing native installs
- you want a customizable, multilingual, CDN-hosted emulator frontend
When to avoid
- you need a standalone desktop emulator application
- you want to embed directly into a React/SPA page without an iframe
- you need high-accuracy native emulation or modern console support
- you want a Docker all-in-one server solution
Facets
library · maturity active
game-engine wasm plugin-system gui gaming-tools web-development frontend cross-platform browser wasm emulation retroarch libretro retro-gaming console-emulator embeddable cdn rom-player gameboy nes snes playstation n64 sega javascript web-server
7 sources
- readme: https://github.com/EmulatorJS/EmulatorJS · fetched 2026-08-28 · e3b6890e0ae2
- homepage: https://emulatorjs.org · fetched 2026-08-29 · dac9d52e6747
- site_page: https://emulatorjs.org/docs · fetched 2026-08-29 · 2e34954eb9ac
- site_page: https://emulatorjs.org/docs/embed · fetched 2026-08-29 · 0aa200af4407
- site_page: https://emulatorjs.org/docs4devs/buildingraw · fetched 2026-08-29 · e3d2f311c223
- site_page: https://emulatorjs.org/docs/languages · fetched 2026-08-29 · 4b824e54b2d2
- site_page: https://emulatorjs.org/docs/options · fetched 2026-08-29 · 34169c9a3392
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| EmulatorJS/EmulatorJS | main | 77 |
For agents
markdown · JSON · MCP: product_card(name="EmulatorJS/EmulatorJS")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem