World 2-1 (Super Mario Maker for Nintendo 3DS)
From the Super Mario Wiki, the Mario encyclopedia
This level is nearly identical to Sunken Mario, the twenty-first sample course in Super Mario Maker (Wii U); both levels feature depictions of Super Mario Bros. objects made out of course elements, depicting (left to right) Small Mario, a Magic Mushroom, a Starman, a Coin, and a Fire Flower. There are some differences, however; for example, the level's eight Hidden Blocks now have Coins surrounding them, making the Super Stars inside easier to find. There are also fewer Goombas than there were in the original, especially at the goal, making the Bowser challenge (see below) easier.