KuroganeNES

Summary

KuroganeNES is a browser-based emulator for NES and Famicom Disk System games. It runs from a self-contained HTML file: for single-player use, open nes.html and load a ROM without an installer, plugin, build step, or server. The project describes its emulation as cycle-accurate and modeled on the NES-001, with verification across several named test suites and four CPU/PPU clock alignments. It supports 561 mappers and uses ROM fingerprints to choose settings for thousands of known games. Video and audio options include NTSC and PAL timing, composite-video modeling, and expansion audio for several chips. Play features include save states, rewind, fast-forward, local multiplayer, and online play for two or four players. It also supports several peripherals and includes cheats, ROM patching, an NSF player, a TAS studio, and debugging tools. Remote multiplayer requires Node.js, a TLS certificate, and network access to port 8888 by default. Version 1.x save states, TAS movies, and netplay sessions are incompatible with v2.0.

Who it is for

It suits players who want to run NES or Famicom Disk System games in a modern browser, including those interested in multiplayer, peripherals, or debugging tools. Remote multiplayer is for users able to meet its server and network requirements.

Compared on NES emulators

Free plan

Yesgithub.com

Supported platforms

Modern web browsersgithub.com

Save states

Yesgithub.com

Rewind

Yesgithub.com

Netplay

Yesgithub.com

Cheat support

Yesgithub.com

Facts

What it does

KuroganeNES is a cycle-accurate NES and Famicom Disk System emulator that runs in a self-contained HTML file in a browser.github.com · 30 Sept 2026

Setup

Single-player play requires no installer, plugins, build step, or server; users open nes.html and load a ROM.github.com · 30 Sept 2026

Emulation

The project says its emulation is modeled on the NES-001 and verified against blargg tests, nestest, and the AccuracyCoin suite across four CPU/PPU clock alignments.github.com · 30 Sept 2026

Game support

It supports 561 mappers and uses CRC32 ROM fingerprinting to select mapper, mirroring, timing region, and peripherals for thousands of known games.github.com · 30 Sept 2026

Video and audio

Features include NTSC and PAL timing, a composite-video model, and expansion audio for VRC6, VRC7, FDS, MMC5, Namco 163, Sunsoft 5B, and EPSM.github.com · 30 Sept 2026

Play features

It includes save states, rewind, fast-forward, local multiplayer, and online multiplayer for two or four players.github.com · 30 Sept 2026

Peripherals

Supported peripherals include the Zapper, Power Pad, Family BASIC and Subor keyboards, Oeka Kids tablet, and Famicom microphone.github.com · 30 Sept 2026

Other tools

The project includes Game Genie cheats, IPS/BPS/xdelta ROM patching, an NSF music player, a TAS studio, and CPU/PPU debugging tools.github.com · 30 Sept 2026

Integrations

Online multiplayer optionally uses a zero-dependency Node.js WebSocket relay; local and single-player use do not need it.github.com · 30 Sept 2026

Online requirements

Remote multiplayer requires Node.js, a TLS certificate, and port 8888 reachable through the firewall and router by default.github.com · 30 Sept 2026

Compatibility limit

The v2.0 changelog says save states, TAS movies, and netplay sessions from version 1.x are not compatible with v2.0.github.com · 30 Sept 2026

License

KuroganeNES is released under the MIT License, while bundled components retain their own licenses.github.com · 30 Sept 2026

Maker details

The opened project page identifies the GitHub account dzoberg as the repository owner but does not state a maker name, headquarters, or founding date.github.com · 30 Sept 2026

Where it ranks on Everything Xiaomi

• Best NES Emulators in 2026#6 of 26

Sources

• github.com/dzoberg/KuroganeNES· checked 30 Sept 2026