'Tom Chatfield's ''Fun Inc.'' is the most elegant and comprehensive defence of the status of computer games in our culture I have read, as well as a helpful compendium of research...The numbers surrounding the sector are certainly thudding. By the end of 2008, annual sales of video games - not including consoles or devices - was $40 billion, comfortably outstripping the movie business. In the same year, Nintendo's employees were more profitable per head than Google's. The sheer pervasiveness of game experience - 99 per cent of teenage boys and 94 per cent of teenage girls having played a video game - means that instant naffness falls upon those who express a musty disdain for the medium. In fact, as ''Fun Inc.'' elegantly explains, computer game-playing has a very strong claim to be one of the most vital test-beds for intellectual enquiry' - ''Independent''.