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Jsnes JavaScript NES emulator releases

current

Jsnes JavaScript NES emulator is tracked under consoles & gaming. Its latest version, 2.1.0, shipped on Apr 11, 2026.

Latest version
2.1.0
Released
Category
Consoles & gaming
Last checked

How to update Jsnes JavaScript NES emulator

Open update page ↗
  1. Read the release notes first for anything that changes your settings or saved data.
  2. Phone apps: update from the app store, or from the project's releases page if you installed it from there.
  3. Desktop apps: download the build for your system from the releases page and install it over the old one, or update through your package manager if you installed it that way.
  4. Back up settings and saved data (save files, profiles, configs) before a major version.

Always install releases from the project itself. Firmwarely links out; it never hosts downloads.

What changed

Highlights: MMC5 mapper support (Castlevania III and others) plus a batch of PPU, APU, and mapper accuracy fixes. New mappers: Mapper 5 (MMC5) — Castlevania III, Uncharted Waters, Laser Invasion, and other late-era titles. Dual CHR bank sets, ExRAM modes, split-screen nametable, direct-CHR sprite 0…

Release notes ↗

Version history

2.1.0

FAQ

What is the latest version of Jsnes JavaScript NES emulator?

Version 2.1.0, released Apr 11, 2026. This page is refreshed every hour from the project's release page.

How do I update Jsnes JavaScript NES emulator?

See the step-by-step above. Pull the new image or package and restart the service. Read the release notes and back up the data directory first; most projects can't downgrade once the database has migrated.

How does Firmwarely know when there's a new version?

Every hour we read the project's official release page for Jsnes JavaScript NES emulator and record the version, date and changelog. Subscribers watching it get an email when it changes: the next morning on Pro, in the Monday roundup on the free plan.

Is this an official Jsnes page?

No. Firmwarely is independent. Project and product names belong to their owners; always install releases from the project's own source.

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