Pygame - Pygame is a set of Python modules designed for writing games.
JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
Unigine - Unigine Engine is a proprietary cross-platform middleware, developed by Unigine Corp.
Qt - Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Allegro - Allegro 4 and Allegro 5 are cross-platform, libraries mainly aimed at video game and multimedia...