How to be a successful iPhone game developer: Enigmo creator speaks

There are over 27 million applications for the iPhone, a platform that has revolutionised the handheld gaming industry. For one Mac developer, it's the platform that made his company $1.5 million. Brian Greenstone, creator of the phenomenon Enigmo - a game that's sold 810,000 units in six months - speaks with the gamesblog at the annual South by Southwest Interactive festival, about what it takes...