Gideros Release version
INSTEAD - Simple Text Adventure Interpreter.
Orx: Portable Game Engine
Game engine supporting many 3D/2D formats and graphic effects
Portable game engine with main focus on point-and-click adventures
Build Cross-platform Applications
An environment to develop games based on a rectangular board
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Asphyre is a cross-platform framework for Delphi and FreePascal.
3D .NET engine for Windows, Linux, Mac
c# lua bind with unity3d project for game development
Cross platform Game Creation Software
C-Lesh is a game programming language for 2D games.
The classic intelligent role playing game
Make games with Lego-like building blocks
A powerful cross-platform and open-source 3-D rendering engine.