Desktop/Android/HTML5/iOS Java game development framework
Open source library for creative expression on the web, desktop, etc.
JavaScript framework to build game engines, games, emulators and apps
Cinema Enters Game Console
Asphyre is a cross-platform framework for Delphi and FreePascal.
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
Cross-platform 2D game engine