Nostalgist.js

6.7easy start · #18 of 29
in Sega Genesis Emulators

Free to practise onyes
Free trialnot on record
Well documentedyes
Runs where you worknot on record

Runs on Web.

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Nostalgist.js is ranked #18 of 29 in Sega genesis emulators on The Geeks Club. It runs on Web. There is a free plan.

Nostalgist.js plans and pricing

All plans

Nostalgist.js Free MIT-licensed JavaScript library; no paid plans are stated github.com · 4 Oct 2026

Compared on Sega genesis emulators

Free plan: Yes
Supported platforms: web browsers
System scope: multi_console
Save states: Yes
Shader support: Yes
License: open_source

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The record

What it does: Nostalgist.js is a JavaScript library for running retro console emulators such as NES and Sega Genesis in web browsers.
Intended audience: The project describes itself as a tool for developers who want to build browser based emulation experiences.
Emulation engine: It simplifies launching RetroArch in a browser using a ROM and a core, without additional configuration.
Save and load: The library can save a game's state and load it later.
Configuration: Developers can customize RetroArch and core configuration before launch.
Low level access: The API exposes low level Emscripten interfaces, including the virtual filesystem.
Console helpers: The API documents helpers for NES, SNES, Mega Drive, Game Boy, Game Boy Color, and Game Boy Advance.
Distribution: Projects can install the library through npm, yarn, pnpm, or bun, or load it from CDNs including unpkg and jsDelivr.
Dependencies and delivery: Nostalgist.js itself does not contain emulators; by default, emulator cores are fetched from RetroArch Emscripten builds via jsDelivr.
Bring your own content: Developers can load ROM files from their own server, which must have CORS headers configured properly.
Content limitation: The project says it does not provide or encourage pirated ROM or BIOS files.
Examples and integrations: The project documents a StackBlitz example and lists projects including NextCloud Nostalgist and a VS Code extension among its showcases.
Price from: Free

Where it ranks on The Geeks Club

Best Sega Genesis Emulators in 2026#18 of 29

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Sources

nostalgist.js.org· checked 4 Oct 2026
nostalgist.js.org/apis/· checked 4 Oct 2026
nostalgist.js.org/guides/getting-started/· checked 4 Oct 2026
nostalgist.js.org/guides/under-the-hood/· checked 4 Oct 2026
github.com/arianrhodsandlot/nostalgist· checked 4 Oct 2026