New Super Mario Bros. 2: 3-B

This level features the Mini Mushroom. Get one from the item block, swim through the water, and choose either the red pipe above or the yellow pipe below. The red pipe leads to a faster area than the yellow pipe. Both are automatic sidescrollers. Get the Gold Block and run on the water. The level will start to move. The first Star Coin is over a Parakoopa. Bounce off another Parakoopa to reach the platform below a green pipe. Go up the pipe and the level will stop automatically scrolling. There are Bill Blasters and coins high in the sky of this Coin Heaven. As Mini Mario, you can bounce off the Bullet Bills without stomping on them. Just bounce on them and let them take you through the coins to the second Star Coin at the end. You'll drop down to the midpoint at the end of the area. You can pick up another Mini Mushroom. Go through the pipe. Regardless of which pipe you took at the beginning, it will lead here, which scrolls slowly. There are Red Coins here, as well as brick blocks to make navigating tricky. The third Star Coin is to the right of one set of brick blocks, so get it quickly and jump over the next set. You'll soon make it to the pipe to the flag. This opens a path around the Ghost House to the castle.

Coin Total: 19,141

New Super Mario Bros.: 3-B

This level is a pipe world. Several pipes contain Piranhas or Fire Piranhas. The first Star Coin can be reached by going past it, down a red pipe, going left, then up. Go back right. To reach the second Star Coin, wall jump up the green pipe with the Fire Piranha and the short red pipe. The third Star Coin is under a pipe, but the gap may be too narrow to get while approaching from the left. Go over the pipe, then under it to reach it. Continue to the right to reach the goal, which leads to 3-C.