Phaser vs three.js
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A free JavaScript framework for making 2D HTML5 games that run in web browsers and on mobile web.
Open source · MIT
A JavaScript library for drawing and animating 3D scenes in web browsers.
The short answer
Choose Phaser if you need…
- Developers who already know JavaScript or TypeScript and want to make 2D browser games
- Hobbyists making simple 2D games for the web
- Teams that want to use Phaser alongside React, Vue, Angular or Svelte
- Developers making games for platforms like Discord Activities or YouTube Playables, as described in the README
Choose three.js if you need…
- Web developers adding interactive 3D graphics to a website
- Developers building browser-based visualizations or simple 3D animations
- People who already know JavaScript and want to start with 3D on the web
Side-by-side
| Phaser | three.js | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 40.6k | 117k |
| Setup difficulty | Intermediate | Intermediate |
| How you get it | Install with a package manager | Install with a package manager |
| Main language | JavaScript | JavaScript |
| Last code update | 3 months ago | 4 days ago |
What each one is
Phaser
Phaser is an open source framework for building 2D games with JavaScript or TypeScript that run in web browsers on desktop and mobile. It provides rendering (WebGL and Canvas), physics options, input handling, cameras, tilemaps, animations and other building blocks so you don't have to write them from scratch. According to the README, it can also be wrapped for some app stores and platforms such as Steam and Discord Activities using third-party tools.
three.js
Three.js is a JavaScript library that lets developers create 3D scenes, cameras, and objects and display them in a web page. The README describes its aim as an easy-to-use, lightweight, cross-browser, general-purpose 3D library. It currently includes WebGL and WebGPU renderers, with SVG and CSS3D renderers available as addons.
Best for
Phaser
- Developers who already know JavaScript or TypeScript and want to make 2D browser games
- Hobbyists making simple 2D games for the web
- Teams that want to use Phaser alongside React, Vue, Angular or Svelte
- Developers making games for platforms like Discord Activities or YouTube Playables, as described in the README
three.js
- Web developers adding interactive 3D graphics to a website
- Developers building browser-based visualizations or simple 3D animations
- People who already know JavaScript and want to start with 3D on the web
Strengths
Phaser
- Free and open source under the MIT license, with a large community and a commercial maintainer, Phaser Studio Inc
- Runs in the browser with both WebGL and Canvas rendering, so one codebase covers desktop and mobile web
- Ships with a broad feature set in one package, including physics, animation, input, cameras and tilemaps
three.js
- The README presents it as a general-purpose, cross-browser 3D library
- Includes a documented usage example that creates a scene, camera, mesh, and renderer
- Has extensive official resources listed, including examples, docs, and a manual
Not ideal for
Phaser
- People who want to make 3D games, since the README describes Phaser as a 2D framework
- Complete beginners with no programming experience, since it requires working with JavaScript or TypeScript
- Projects that need a full visual game editor, since the README focuses on a code-based workflow
three.js
- People who only need 2D graphics, since the library is focused on 3D scenes
- Anyone looking for a finished app rather than a code library to build with
- Beginners with no JavaScript experience, as the README code assumes familiarity with modules and the browser
Trade-offs
Phaser
- The full build is large in raw form (phaser.js is over 8 MB, though the minified build is 345 KB compressed), and the README suggests trimming features to reduce size
- Phaser 4 changed the rendering system from v3, so existing v3 projects may need migration per the linked migration guide
- Claims such as 'AI-ready' and 'million sprites' come from the README's own marketing and were not independently verified here
three.js
- The full git history is about 2 GB, so a shallow clone is recommended for most users
- The README does not describe install steps beyond the import example, so setup details must come from the docs
- Working in 3D requires understanding concepts like cameras, geometry, and materials
Getting started
Phaser
Install via npm
npm install phaserCreate a new game project with the interactive tool
npm create @phaserjs/game@latestthree.js
Shallow clone of the repository
git clone --depth=1 https://github.com/mrdoob/three.js.gitFrequently asked questions
What is the difference between Phaser and three.js?
Phaser: A free JavaScript framework for making 2D HTML5 games that run in web browsers and on mobile web. three.js: A JavaScript library for drawing and animating 3D scenes in web browsers. Phaser suits developers who already know javascript or typescript and want to make 2d browser games, while three.js suits web developers adding interactive 3d graphics to a website.
Are Phaser and three.js free?
Phaser: Free and open source. three.js: Free and open source.
Is Phaser or three.js more popular?
three.js has more GitHub stars (117k) than Phaser (40.6k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to Phaser and three.js?
Other options people compare them with include PixiJS, PlayCanvas, G2, Dear ImGui, EnTT.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.