FlightGear Flight Simulator: free open-source multiplatform flight sim
ZED OS the clone of Windows XP
Web powered cross-platform 3D, WebXR game engine
Children's learning programming language Karel the Robot in 3D
Wolfenstein 3D HTML5 TOTAL Conversion
3D urban environment renderer : browser-app ; as well as a GTA clone
A comprehensive path-finding library for grid based games
Egret is a brand new open mobile game and application engine
TurboSphere is an easy to learn and powerful JS based game engine.
SuperWikia: The Runtime/Realtime Environment for Codesmiths
my webGL code
Render model from the Aion: Tower of Eternity in WebGL