The upcoming Wii U title Captain Toad: Treasure Tracker apparently was originally designed to be a Zelda title, according to director Shinya Hiratake.
In an interview with GameInformer, Hiratake explained that since the original idea was to have the game be set inside smaller worlds than normal, the ability to jump would’ve made them bigger than intended, and The Legend of Zelda‘s protagonist was seen as the perfect fit since he’s less known for jumping and more for exploring and puzzle solving.
However, this idea was shot down, but Shigeru Miyamoto saw promise in the idea and had Hiratake and his team incorporate the idea into Super Mario 3D World. Hiratake then remembered about a Toad that appeared in the Wii title Super Mario Galaxy who wore a large backpack, so he chose this character to star in the levels since the backpack would prevent him from jumping. Afterwards, Miyamoto approached the team about expanding the idea into its own game, thus leading to Treasure Tracker.
Captain Toad: Treasure Tracker will be out for the Wii U on December 5th in North America and early January in Europe and Australia.