
Since Apple launched its iTunes Application Store in July 2008, iPhone and iPod touch users have downloaded more than a billion “apps” - city guides, translation dictionaries, travel tools, photo-sharing widgets and restaurant-finding applications - on to their devices.But it is the unexpected success of the iPhone and iPod touch as a gaming platform that has taken everyone by surprise.The touch-screen interface and motion-sensing capabilities of Apple’s devices have allowed video-game developers...