Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
4 players Breakout game
Character animation system for games and simulations.
Children's learning programming language Karel the Robot in 3D
Modern AS3 Game Engine
3D .NET engine for Windows, Linux, Mac
Hungry Hero is an open source Flash game built on Starling Framework.
A cross-platform OpenGL based lightweight scenegraph library
Cross-platform 2D game engine