n64js
n64js is a free Nintendo 64 emulator written mostly in pure ES6 JavaScript, with a hosted version available on GitHub Pages.
What n64js is
n64js is a free Nintendo 64 emulator written mostly in pure ES6 JavaScript, with a hosted version available on GitHub Pages. It runs in a browser and requires WebGL, which limits the graphics hardware it can use. The project says many ROMs run close to full speed, but graphical issues affect many playable titles, and imprecise cycle counting is also a compatibility limitation. The site provides keyboard controls for N64 buttons and an interface for controller configuration. Save data can persist through localStorage, with save import and export listed as implemented features. Saving and loading require native Uint8Array base64 methods supported in Chrome or Edge 140+, Firefox 133+, or Safari 18.2+, including iOS. Low-level audio emulation is implemented, while high-level audio remains in progress. Savestates are listed as a TODO rather than a completed feature. The hosted site reports Chrome, Firefox, and Safari tested on macOS 13.5; Edge is untested.
Good
- Free browser-based emulator hosted on GitHub Pages.
- Provides keyboard controls and controller configuration.
- Save persistence and import/export are listed.
- Includes configurable CRT display effects.
Watch out
- Requires compatible WebGL graphics hardware.
- Many playable ROMs have graphical issues.
- High-level audio emulation remains in progress.
- Savestates are not complete.
Who it suits
It may suit users interested in browser-based N64 emulation or exploring JavaScript emulation. Users should be comfortable with WebGL requirements and compatibility limitations.
Verdict
n64js offers browser-based N64 emulation with configurable controls and save-data features. Its WebGL requirement and documented graphics, audio, and compatibility limitations are important considerations.
Plans and prices
From n64js's own pricing page, checked 4 Oct 2001.
| Plan | Price | What it gives you |
|---|---|---|
| n64js | Free | No paid plans or usage limits stated |
The facts
Each one read from n64js's own pages, with the date it was checked.
What it does
- Audio
- The repository says low-level audio emulation is implemented and high-level audio emulation is a work in progress.checked 4 Oct 2001
- Availability
- A hosted version is available on GitHub Pages.checked 4 Oct 2001
- Compatibility
- The project says many ROMs run at full framerate, though most playable ROMs have some graphical issues.checked 4 Oct 2001
- Controls
- The emulator supports static and configurable key bindings, and lists the Gamepad API as an implementation feature.checked 4 Oct 2001
- Debug features
- The emulator offers Off, Simple, and Mattias CRT display effects under Debug → Graphics → CRT.checked 4 Oct 2001
- Graphics
- The repository says graphics use high-level emulation and that many ROMs have graphical issues.checked 4 Oct 2001
- Headless use
- The repository documents Bun scripts for creating a headless emulator and setting controller input programmatically.checked 4 Oct 2001
- Hosted version
- A hosted version is available on GitHub Pages.checked 4 Oct 2001
- Intended audience
- The maker describes the project as a JavaScript emulator showcase and a way to explore what modern browsers can do.checked 4 Oct 2001
- Known limitations
- The README identifies imprecise cycle counting and graphics as compatibility issues and lists savestates as a TODO.checked 4 Oct 2001
- License
- The repository identifies its license as MIT.checked 4 Oct 2001
- Origin
- The hosted page says n64js is based on Daedalus, an emulator its maker began writing while at university.checked 4 Oct 2001
- Performance
- The project says many ROMs run at close to full speed, though graphical issues remain.checked 4 Oct 2001
- Product
- n64js is an N64 emulator written mostly in pure ES6 JavaScript.checked 4 Oct 2001
- Purpose
- n64js is an N64 emulator written mostly in pure ES6 JavaScript.checked 4 Oct 2001
- Save data
- The repository lists save persistence through localStorage and save import/export among its implementation features.checked 4 Oct 2001
- Support
- The hosted site invites users to get in touch via the maker’s Twitter account.checked 4 Oct 2001
Where it runs
- Browser compatibility
- The live site reports Chrome, Firefox, and Safari tested on macOS 13.5, with Edge untested.checked 4 Oct 2001
- Browser requirement
- The emulator requires WebGL, which limits the GPUs it can run on.checked 4 Oct 2001
- Browser requirements
- The hosted emulator requires WebGL, and saving and loading require native Uint8Array base64 methods supported in Chrome/Edge 140+, Firefox 133+, or Safari 18.2+ including iOS.checked 4 Oct 2001
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