FREEDOM251

Freedom251 › NES Emulators

Nintengo

Free plan LinuxMacWebWindows

Visit Nintengo Alternatives

Nintengo's own site

What Nintengo is

Nintengo is a free NES emulator written in Go. It runs .nes files, including files contained in ZIP archives, and supports NTSC and PAL regions. Desktop build instructions cover Mac OS X, Linux, and Windows; a WebAssembly version can run in a browser using a local web server. Building for WebAssembly requires Go 1.11 or higher. Nintengo stores battery-backed saves as .sav files and save states as .nst files. It supports two-player netplay through its listen and connect options. Users can capture JPEG screenshots, record GIF video, and record WAV audio. Listed controls include keyboard input, pausing, stepping, resetting, state saving and loading, and fast-forward options. Debugging options include CPU instruction decoding, CPU and memory profiling, and an HTTP service address. Supported mappers listed by the project include NROM, MMC1, UNROM, CNROM, MMC3, ANROM, and MMC2. Audio is still a work in progress, though all channels work in some capacity. The project is published under the GPL-2.0 license.

Who it suits

Nintengo may suit people looking for a free NES emulator on desktop or in a browser, as well as users who want save states, netplay, or debugging options.

What it does well

  • Runs .nes files directly or inside ZIP archives.
  • Supports NTSC and PAL regions.
  • Includes two-player netplay.
  • Can capture screenshots and record GIF or WAV files.
  • Offers save files and save states.

What to know first

  • WebAssembly builds require Go 1.11 or higher.
  • Audio support is still a work in progress.
  • Browser use requires a local web server.

Getting started

  1. Visit the Nintengo project website.
  2. Choose a desktop build route for Mac OS X, Linux or Windows, or build nintengo.wasm for browser use.
  3. For WebAssembly, use Go 1.11 or higher and run the browser version with a local web server.
  4. Open a .nes file or a .nes file stored in a ZIP archive.

Verdict

Nintengo covers NES playback, saving, netplay, capture, and debugging across desktop builds and a WebAssembly option. Its audio support remains unfinished, and browser use requires a local web server.

Questions

Is Nintengo free?

Yes. Nintengo is free and has a free plan.

Which systems can run Nintengo?

Build instructions cover Mac OS X, Linux and Windows. WebAssembly support allows it to run in a browser using a local web server.

What ROM files does it accept?

It runs .nes files directly or .nes files inside ZIP archives.

Can I save progress?

Yes. Battery-backed saves use .sav files, and save states use .nst files.

Is Nintengo open source?

The project is published under the GPL-2.0 license.

Does it support two-player netplay?

Yes. Two-player netplay is available through its -listen and -connect options.

Facts from Nintengo's own pages

Audio
The README says audio support is a work in progress and that all audio channels work in some capacity. · github.com, 2 Oct 2026
Audio status
Audio support is a work in progress, with all audio channels working in some capacity. · github.com, 1 Oct 2026
Debugging
Command-line options include CPU instruction decoding, CPU profiling, memory profiling, and an HTTP service address. · github.com, 1 Oct 2026
Desktop build
The README documents builds for Mac OS X, Linux, and Windows using Azul3D and Go. · github.com, 1 Oct 2026
Desktop platforms
The build instructions cover Mac OS X, Linux, and Windows. · github.com, 2 Oct 2026
Integrations
The project page does not list third-party integrations. · github.com, 1 Oct 2026
Interface
The listed controls include keyboard input, pause and stepping, reset, save and load state, and fast-forward speed options. · github.com, 2 Oct 2026
License
The repository identifies its license as GPL-2.0. · github.com, 2 Oct 2026
Mapper support
The listed supported mappers are NROM, MMC1, UNROM, CNROM, MMC3, ANROM, and MMC2. · github.com, 2 Oct 2026
Netplay
Nintengo includes two-player netplay using listen and connect command-line arguments. · github.com, 2 Oct 2026
Purpose
Nintengo is an NES emulator written in Go. · github.com, 2 Oct 2026
Recording
The command-line options include GIF and JPEG video recording and WAV audio recording. · github.com, 2 Oct 2026
Region modes
The emulator supports NTSC and PAL system regions. · github.com, 1 Oct 2026
ROM files
The emulator accepts a .nes file or a .nes file inside a .zip archive. · github.com, 2 Oct 2026
ROM formats
It runs .nes files and .nes files inside ZIP archives. · github.com, 1 Oct 2026
Save support
Battery-backed saves use .sav files, and save states use .nst files. · github.com, 2 Oct 2026
Security
The project page does not state security or compliance certifications. · github.com, 1 Oct 2026
WebAssembly
WebAssembly support requires Go 1.11 or higher and runs in a browser after building nintengo.wasm. · github.com, 1 Oct 2026
Web support
The project supports WebAssembly and can run in a browser using a local web server. · github.com, 2 Oct 2026

Where Nintengo stands on Freedom251

Look at these too