Desktop/Android/HTML5/iOS Java game development framework
Gideros Release version
Open game and rendering engine packed into a JavaScript framework
One framework for creating powerful cross-platform games
Game engine supporting many 3D/2D formats and graphic effects
Amateur 3D Game Engine
Vivid3D is an open-source 3D engine with powerful 2D UI.
Java Settlers
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Modern 3D engine and IDE written using C# and C++.
A 2D game engine and level editor
8-bit Graphical API for Java
Source code of the chapters of the book 3D Game Development with LWJGL
CSG for jMonkey
Example code for creating a 2D platform game in Java.
3D .NET engine for Windows, Linux, Mac
.NET - VISUAL BASIC NVIDIA +ATI PHYSX SLIMDX DIRECTX 9 -ENGINE/WRAPPER
Open Game Bootstrap
An advanced flexible game engine for Java.
XNA based game engine completely written in c#
Cross-platform C framework very compact libraries and tools.
3D Game engine