New Super Mario Bros. U: Soda Jungle-1 -- Jungle of the Giants

This level is like Supermassive Galaxy: everything in it is larger than normal. The item blocks, brick blocks, Goombas, and Koopas are all massive. The giant Goombas will split a couple of times, resulting in 8 normally-sized Goombas. Grab the (normally-sized) Fire Flower and go past the giant Piranhas. It will take a few fireballs to kill them. Use the giant Koopa shell to hit some lower blocks that will give you access to the first Star Coin. Next will be a set of four pipes. Mario can't go through the large pipes. There is a normally-sized pipe in the set, but it's blocked by blocks. Use a shell to get rid of the blocks. It leads to a P-Switch and some coins. The midpoint is soon after you return to the main level. The pipe after the sign with the arrow leads to a P-Switch and the second Star Coin. Bounce off the Goomba to reach the Star Coin. There's a set of low brick blocks with some item blocks in it. Use a shell to get rid of some of the bricks so you can reach some of the item blocks. The second item block in the set has a Starman. Run to the end of the level and triple jump up the blocks with the giant Koopas to reach the third Star Coin right in front of the flag. This opens the path to Soda Jungle-2 and -3.