New Super Mario Bros. U: Layer-Cake Desert- Castle -- Morton's Compactor Castle

This castle features moving stones over large pits of lava. The stones have the potential to crush you, so be careful. The first Star Coin is over the lava. Drop down to the stone below it and jump to get it. You'll soon come across a red pipe. Go up and over the pipe by wall jumping for a pipe to the second Star Coin. Back in the main level, there's a mini gap with some coins. After dealing with some more stones, you'll reach the midpoint. The third Star Coin is also over the lava. Drop down and ride the platform under the blocks to ge ti and transfer to the next platform. There's a Green Ring nearby. If you have an Ice Flower, freeze the Dry Bones on the floor near the Podoboos and slide it into them for a 1-up. Next is a set of blocks that will form compartments for you to stand it, so watch them carefully. If you go over the ceiling and to the left, you'll find some more coins. The boss door is to the right. Take the cannon to the Airship. Morton Koopa Jr. has a hammer, which makes a giant Pokey appear when he uses it. The Pokey will prevent you from attacking Morton and will throw its segments at you. Jump to dodge them. Once the Pokey is gone, attack Morton. Try to stomp him immediately after he comes out of his shell so you don't have to deal with more Pokeys. After you defeat him, his Airship crashes. We have all of the Star Coins in Layer-Cake Desert. The path opens up to two new worlds: Sparkling Waters and Frosted Glacier. I'll be going to Sparkling Waters first.