For his next trick, Shigeru Miyamoto is working in reality, not virtual reality. While the famed Japanese creator of “Mario Bros.” and “Donkey Kong” spent most of his trip to last week’s Electronic Entertainment Expo touting such upcoming Nintendo games as “Super Mario Maker” and “Star Fox Zero,” Miyamoto was also enthusiastic about a totally different undertaking. He’s helping to bring his digital creations to life in Universal theme parks. “We’ve come to the point where the kids who grew up playing Nintendo games are now parents who have their own kids,” said the veteran game designer during an interview translated by Bill Trinen, product marketing director at Nintendo of America. Nintendo Co. announced plans last month for immersive experiences featuring the Japanese gaming giant’s characters at Universal theme parks, but it didn’t provide any details.