Babylon.js
Babylon.js: a complete JavaScript framework for building 3D games with HTML 5 and WebGL
Melon JS
a fresh & lightweight javascript game engine
Nipplejs
A virtual joystick for touch capable interfaces.
Joy.js
A Joyful 2D HTML5 Game Engine.
Rot.js
ROguelike Toolkit
Crafty
Crafty is a JavaScript game library that can help you create games in a structured way.
Blend4 Web
Blend4Web is a tool for interactive 3D visualization on the Internet
Turbulenz Engine
Turbulenz is a modular 3D and 2D game framework for making HTML5 powered games for browsers and mobile devices.
Cutjs
Lightweight, fast, interactable 2D HTML5 rendering engine for cross-platform game development.
PhysicsJS
A modular, extendable, and easy-to-use physics engine for javascript
Flash JS
JavaScript graphics and games engine with API familiar to Flash one. Just look to examples sources.
Black
World's fastest HTML5 2D game engine 🛸
Kiwi.js
Kiwi.js is a blazingly fast mobile & desktop browser based HTML5 game framework. It uses CocoonJS for publishing to the AppStore.
Phina.js
phina.js is game library
Easystar.js
An asynchronous A* pathfinding API written in Javascript.
Superpowers Core
:octopus: Superpowers — Extensible HTML5 app for real-time collaborative projects
Coquette
A micro framework for JavaScript games