Simple and light-weight 3D game engine
Easy to use Python library for creating 2D arcade games
Phaser is a free and fast 2D game framework for making HTML5 games
Lua Virtual Reality engine
Godot game template and component-based framework
Creative cellular automata browser game
An open source library for GPU-accelerated robot learning
Javascript Matrix and Vector library for High Performance WebGL apps
2D GPU-accelerated framework for ActionScript developers
Ct.js is a desktop game engine that makes learning programming fun
Cross platform Virtual Reality authoring and playback
Everything you need to build and deploy scalable realtime 3D apps
A Logo-like 3D environment, implemented in Nim
a 2D Game Development Framework
iOS and OS X animation library for physics-based interactions
Physics-based grabbing for SteamVR development in Unity
A Phaser CE plugin that brings sloped tile collision handling
Super-fast 3D framework for Web Applications
3D .NET engine for Windows, Linux, Mac
Cocos2d for iOS and OS X, built using Objective-C
3D simulation library
Editor of virtual worlds.