It's a Shoe-In

It's a Shoe-In (Japanese: Kutsu o Haite GO! GO! ( クツをはいてGO！GO！ ''With Boots On, GO! GO!, unofficially known as Castle à Go-Go)) is the sixteenth e-Reader level of Super Mario Advance 4: Super Mario Bros. 3''. It was originally exclusive to Japan, but became available internationally when the game was released on the Virtual Console in 2016. It takes place in a castle-like area, with many spikes in the level, requiring the Goomba's Shoe for navigation. This level contains many Thwomps, Koopa Troopas and three Advance Coins. At the start of the level, Mario will land on a floating P Switch instantly, making navigation to the first Goomba's Shoe possible and providing access to the first Advance Coin. This level indicates that it is possible to defeat Thwomps with the Goomba's Shoe.

New Level Elements

 * ? Blocks containing Goomba's Shoes

Trivia

 * A fan-remade version of "Kutsu o Haite GO! GO!", created in Super Mario Maker was featured as one of Nintendo's weekly course selections. Subscribers to the Nintendo Newsletter received a mail on October 24, 2015, which included these course selections, and the highlighted level of this article was remade into one of them by a user called Nigge from Australia, as E-16: Castle à Go-Go!. The level is obviously designed in the vain of the NES Super Mario Bros. 3, and its ID is BC9E-0000-0082-FFF5.
 * In this level, the Thwomps could be stomped on using the Goomba's shoe. But in Super Mario Maker, the Thwomps are solid to land on with the Goomba's shoe.