A cut prototype level from Super Mario Bros. Wonder saw Mario's head turn into a giant block and get slowly eaten away by bees.
Super Mario Bros. Wonder assistant director Shiro Mouri just gave a talk at the Game Developer's Conference in San Francisco, where he outlined cut features from the 2023 game. One cut feature, as you can see from the tweet just below, was a prototype level where the player turned into a "giant block Mario" that "advances while avoiding getting eaten" by bees.
