Shigeru Miyamoto has had a hand in creating some of the game industry's most memorable game franchises and unique gameplay experiences. He's had titles that fall into the platformer, adventure, puzzle, simulation, and sports genres, plus many others. Just don't ever expect him to create an MMORPG. Miyamoto shared these words during his 2018 Computer Entertainment Developers Conference.
“A few years ago, when MMORPGs were coming into fashion, I didn’t want to make one. Since I get tired of things easily, I don’t want to keep making one game.”
Miyamoto says MMORPGs requite constant attention and updating, which is a big reason why he's not interested in making one. He likes to move onto new projects to create something different, rather than constantly working on the same experience.