SHSelfHostIndex

EmulatorJS vs KAPLAY

A side-by-side comparison of two self-hosted game engines & frameworks options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
EM EmulatorJS Self-hosted in-browser retro game emulator VS KA KAPLAY Fun JavaScript library for making browser games fast
FeatureEmulatorJSKAPLAY
CategoryGame Engines & FrameworksGame Engines & Frameworks
LicenseGPL-3.0MIT
LanguageJavaScriptTypeScript
Setup difficultyEasyEasy
Min. RAM256 MB128 MB
Deploymentdocker, bare-metal, sourcesource
GitHub stars★ 4,074★ 1,766
First released20202021
ReplacesRetroArch webPhaser

Why pick each one

Choose EmulatorJS if…

  • Pure client-side
  • Easy to embed
EmulatorJS details

Choose KAPLAY if…

  • Released under the MIT license
  • Easy to set up — beginner-friendly
  • Active community (1.8k GitHub stars)
  • Written in TypeScript
KAPLAY details

Frequently asked questions

Is EmulatorJS or KAPLAY better?

Neither is universally better. EmulatorJS has the larger community; both share a easy setup difficulty, so the decision comes down to features and licensing.

Are EmulatorJS and KAPLAY free and open-source?

Yes. EmulatorJS is licensed under GPL-3.0 and KAPLAY under MIT. Both can be self-hosted at no software cost.

Can I run EmulatorJS and KAPLAY with Docker?

EmulatorJS: yes. KAPLAY: check the project docs for container support.

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