#79 - Link Treasure Tracker

Captain Toad: Treasure Tracker originally began as a spin-off to the Legend of Zelda series, where Link explored small, simplistic worlds just like in the final game. To test the final idea, it was first implemented into Super Mario 3D World as a minigame.

SOURCE: http://www.gameinformer.com/b/features/archive/2014/11/14/captain-toad-treasure-tracker-was-almost-a-zelda-game.aspx