Construct is a free Open Source game maker program which will have you churning out hit titles faster than you can say Electronic Tarts. It comes with all kinds of groovy things like pixel shaders, bump-mapping and bone animation (ooh!) and most importantly it supports plugins, which means extensibility. If you’ve been aching to create your own game masterpiece, this could be your chance.
Construct is a free powerful and easy to use development software for both DirectX 9-based games and applications. It includes an event based system for defining how the game or application will behave, in a visual, human-readable way – easy enough for complete beginners to get results quickly. Optionally, advanced users can also use Python scripting to code your creations. Construct is not a commercial software project, and is developed by volunteers.