World 7-3 (Super Mario Maker for Nintendo 3DS)
From the Super Mario Wiki, the Mario encyclopedia
World 7-3 is the third level of World 7 of Super Mario Challenge from Super Mario Maker for Nintendo 3DS. It is the same as World 8-3 in Super Mario Bros.. It is more remixed than 8-3 Remix (Hammer Bros.) from Super Mario Maker as there is actual castle looking areas, but retains the Buzzy Beetle Shells.