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retroemu

Free#30 of 53 in Multi-System Emulators

retroemu: A focused open-source emulator for desktop retro play, saves, shaders, and remote sessions. Ranked #30 of 53 in Multi-System Emulators by our editors (6.4/10); pricing: Open source; best for terminal-based retro emulation and remote play.

6.4/10Editor score

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At a glance

Editor score
6.4 / 10
Pricing
Open source
Best for
Terminal-based retro emulation and remote play
Paid from
Free
Facts checked
22 Sep 2026

Where it wins
- Emulates 25+ systems through libretro WebAssembly cores
- Combines terminal ANSI art, SDL output, saves, shaders, and ZIP loading
- Adds WebRTC host, join, and watch modes for remote play
Where it doesn't
- Requires Node.js 22 or newer
- Some systems require user-supplied BIOS files
- Desktop deployment limits it to desktop environments

Our verdict on retroemu

retroemu is an open-source, Node.js-based emulator for classic console and home-computer games. It is aimed at solo and small-scale users who want a terminal-first way to play retro software, with SDL output available when a graphical window is preferred. The project uses libretro cores compiled to WebAssembly and emulates more than 25 retro systems. ROMs can be loaded from ZIP archives, systems are auto-detected from file extensions, and input works with gamepads or keyboards.

Its standout feature is the range of presentation and play options in a compact emulator. Games can render as truecolor ANSI art in a terminal, in an SDL window, or in both. SDL modes include CRT, scanline, and GLSL shader output, while save states and automatic battery-save persistence cover different types of progress. WebRTC remote play adds host, join, and watch modes, giving the project a broader use case than local emulation alone. These capabilities make retroemu a good fit for users who value configurable output and terminal workflows over a conventional single-interface emulator.

The main setup consideration is its runtime requirement: installation is provided through npm, and the project requires Node.js 22 or newer. BIOS handling also varies by system, with some requiring user-supplied files and others using bundled or replacement firmware. That makes the emulator more suitable for technically comfortable desktop users who can manage ROM and firmware files. Choose retroemu for open-source desktop emulation with terminal output, shaders, saves, ZIP loading, and WebRTC remote play; choose an alternative if you need a non-desktop deployment or prefer an emulator that avoids runtime and BIOS setup considerations.

Your product? Our editors can test retroemu in depth and publish a review, labelled as paid · from $149/mo →

retroemu pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

retroemu fact sheet

Free plan	Not verified
Paid from	Free
Supported systems	Not verified
Android support	Not verified
Arcade support	Not verified
Netplay	Yes
BIOS required	Yes
Shader/upscaling	Yes
License	Open-source
Deployment	Desktop
Support	Docs
Built for	Solo, Small business (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	22 Sep 2026

Alternatives to retroemu

See all retroemu alternatives →

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Featured on iTechGuides

retroemu is listed in our Multi-System Emulators directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update