Rex van der Spuy is a leading expert on video game design and interactive graphics, and he is the author of the popular Foundation and Advanced series of books about how to make video games. Rex has designed games and done interactive interface programming with Agency Interactive (Dallas), Scottish Power (Edinburgh), DC Interact (London), Draught Associates (London), the Bank of Montreal and TVO (Canada). He's also built game engines and interactive interfaces for museum installations for PixelProject (Cape Town, South Africa), and built "Ga," the world's smallest full-featured 2D game engine, and its full-featured sister engine, "Hexi." He created and taught advanced courses in game design for many years at the Canadian School of India (Bangalore, India). The highlight of his career was programming video games on the Annapurna glacier at 4,500 meters (which, to his delight, was 1,000 meters higher than the maximum permissible operating altitude of his laptop).