Open source HTML5 game framework that offers WebGL and Canvas
Open source library for creative expression on the web, desktop, etc.
Gideros Release version
INSTEAD - Simple Text Adventure Interpreter.
Game engine supporting many 3D/2D formats and graphic effects
JavaScript framework to build game engines, games, emulators and apps
2D Game Engine
Modern 3D engine and IDE written using C# and C++.
Portable game engine with main focus on point-and-click adventures
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Asphyre is a cross-platform framework for Delphi and FreePascal.
Multi-threaded game engine for Android
Cross platform 2D/3D game engine written in C++11 & OpenGL ES 2/3
MultiLingual Interactive Fiction
Hungry Hero is an open source Flash game built on Starling Framework.
NinYawg Adventure