It has been stated that Retro Studios helped create some content for Mario Kart 7. Shigeru Miyamoto, the senior managing director and general manager of Nintendo’s Entertainment Analysis and Development, says that the studio was able to properly collaborate with Nintendo’s Japanese developers and might get a chance to work on The Legend of Zelda.

Mario Kart, I believe, was good in order to express that kind of different taste because we have many kinds of different courses for the karts to run and race around,” he continued. “So for each of the different courses, we could identify: Retro is supposed to take care of this course, and EAD is going to do that, and such and such. Then, we were able to join forces in order to realize a variety of different courses, a variety of different tastes. I think that’s one reason how it worked out well between a Japanese development team and a Western development team.”

“As you know, we have already collaborated with Retro for the Metroid Prime series in the past,” said Miyamoto. “And I think when we talk about any other franchise, Zelda might be a possible franchise for that collaboration.”

Source: Wired