Satoru Iwata's story is one laced with unbelievable risks, bright thinking in dark times, and a bold ambition to make a difference. For all that can be said about his charming mannerisms, his warm smile, his unquestionable love of video games, it should not be overlooked that Iwata was a visionary businessman who saved Nintendo by reinventing it.He was a radical force; a revolutionary figure who commanded a century-old company as though it was his own start-up.