Desktop/Android/HTML5/iOS Java game development framework
Godot is a powerful cross-platform game engine
A simple and easy-to-use library to enjoy videogames programming
One framework for creating powerful cross-platform games
Open source HTML5 game framework that offers WebGL and Canvas
Open source library for creative expression on the web, desktop, etc.
A complete 2D/3D Arcade Game Engine for Browser (Blender compatible)
INSTEAD - Simple Text Adventure Interpreter.
Orx: Portable Game Engine
Cinema Enters Game Console
Cross-platform 2D and 3D game engine
Reactive extensions for Unity
Build Cross-platform Applications
Asphyre is a cross-platform framework for Delphi and FreePascal.
Multi-threaded game engine for Android
Open-source, cross-platform, C++ game engine for creating 2D/3D games
3D .NET engine for Windows, Linux, Mac
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
Cross platform Game Creation Software
Hungry Hero is an open source Flash game built on Starling Framework.
cross-platform 2d game engine
The classic intelligent role playing game