The Legend of Zelda: Breath of the Wild is easily the largest and most complicated Zelda title ever made. We went hands-on with the game at E3, and we were part of the many who heard that it’s roughly 12 times the size of the world Link explored in Twilight Princess.

All that space and mechanical complexity means Nintendo’s core team needed to look a bit beyond its office for help in realizing this title.

Nintendo turned to Monolith Soft, the same team behind Xenoblade Chronicles X, for that extra help. Monolith Soft worked on Skyward Sword, too.

Game Informer caught up with Nintendo’s Shigeru Miyamoto at E3 last week, and here’s what he had to say about Monolith Soft’s involvement.

“Yes they are involved in this Zelda. People from Tokyo and Kyoto are working together on this. There is a team of over 100 helping work on this project, and their work has really been helpful.”

More than 100 people working on a Nintendo game is massive. For other titles at other studios? That’s a pretty small team.

The Legend of Zelda: Breath of the Wild is set to release in March, 2017, for both the Wii U and Nintendo NX.