 He said that most of his time on a video game is spent working on player characters and their abilities in order to strike a balance between "fun and complexity" in control.Koizumi mentioned tempo and rhythm as some of the most important elements of a "Mario" game, whereas he gave anticipation of the awaiting challenges as a crucial factor in a "Zelda" title.Unlike Miyamoto, Koizumi often tries to introduce story elements to the video games he works on.