One framework for creating powerful cross-platform games
Gideros Release version
Desktop/Android/HTML5/iOS Java game development framework
Game engine supporting many 3D/2D formats and graphic effects
Orx: Portable Game Engine
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Vivid3D is an open-source 3D engine with powerful 2D UI.
Modern 3D engine and IDE written using C# and C++.
A 2D game engine and level editor
Example code for creating a 2D platform game in Java.
evolution for vegastrike SpaceSim/Combat/Trade game
XNA based game engine completely written in c#
A generic 2D engine for any kind of game
Pygrid is an open-source and cross-platform pygame/python 2D engine.
Hungry Hero is an open source Flash game built on Starling Framework.
Open Source Virtual World and MMOG Development Platform
cross-platform 2d game engine
Cross-platform 2D game engine