Desktop/Android/HTML5/iOS Java game development framework
One framework for creating powerful cross-platform games
Gideros Release version
Open source library for creative expression on the web, desktop, etc.
A simple and easy-to-use library to enjoy videogames programming
Game engine supporting many 3D/2D formats and graphic effects
Amateur 3D Game Engine
Orx: Data-Driven Game Engine
Vivid3D is an open-source 3D engine with powerful 2D UI.
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Cinema Enters Game Console
Modern 3D engine and IDE written using C# and C++.
Cross-platform 2D and 3D game engine
Source code of the chapters of the book 3D Game Development with LWJGL
Portable game engine with main focus on point-and-click adventures
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
Open Game Bootstrap
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Cross-platform C framework very compact libraries and tools.
Open Source Virtual World and MMOG Development Platform
cross-platform 2d game engine
A cross-platform OpenGL based lightweight scenegraph library