I'm a big fan of Shigeru Miyamoto, when we lived the aftermath of the crash, nobody was sure about the NES or FAMICOM, some of my friends said "What is that, a Japanese Atari??? i'll pass", but all of us when we played for the first time SUPER MARIO BROS, all the opinions changed to "We must have the NES"... Shigeru Miyamoto in game design, and Koji Kondo in music (because the music is a great part of the success of SMB) along with Nintendo, made gaming as we know it and saved the gaming industry on the West... Sega then reached to a more mature audience, later Sony with the PS brand expanded gaming to the whole world, and now once again, Shigeru Miyamoto with Nintendo made gaming a whole new experience, they expanded to demographics not seen previously...
Nintendo, Sega and Sony, they are responsible of gaming today, but all started when Shigeru decided to make a game about italian plumbers and a Kingdom in danger...