World 6-4 (New Super Mario Bros. 2)
From the Super Mario Wiki, the Mario encyclopedia
World 6-4 is the fourth regular level in World 6 in New Super Mario Bros. 2. It is one of the only levels in the game taking place in a haunted forest, without being a Ghost House, the other level being World Star-3. It is similar to World 8-1 from the original New Super Mario Bros. game. This level focuses on Peepas, which move platforms by shaking them.
Mario begins the level near two ? Blocks, one of which contains a power-up. A Peepa carrying a lift vertically is then found, followed by a Peepa moving diagonally and a Peepa below a ? Block. A Crowber, two Boos, and more Peepas are then found. The Checkpoint Flag is then found, with two ? Blocks nearby. A lift that is carried by a Peepa when Mario touches it is found, below a ? Block with a Hidden Block containing a 1-Up Mushroom found above it. A Boo and a group of three Peepas holding lifts are found with a Red Ring. After a few platforms, another lift that Mario must ride on is found. Crowbers and a circle of Peepas are encountered while Mario rides the lift. Two more lifts are found, both leading to the Goal Pole.