World Star-Castle

 is the final castle in New Super Mario Bros. 2.

There are 2 parts of the final castle. The first part has many Grinders and also has the Koopalings blasting Mario or Luigi like they did in Bowser's Castle. There are also ropes and fences Mario or Luigi can climb on. The second is the same but Mario/Luigi is now on a Snake Block instead of ropes and fences. At the end, Mario or Luigi battle Dry Bowser. This battle is the same as the Bowser's Castle level. On the first phase, he will breath out blue Fireballs before jumping, allowing Mario or Luigi to hit the ! Switch. On the second phase, the Koopalings make Dry Bowser large. Mario or Luigi will have to jump on platforms to reach the Giant ! Switch.

This course is never selected in the Coin Rush game mode for the same reason Bowser's Castle isn't.

Moon Coins

 * Moon Coin 1: The first Moon Coin is located above lava on a fence.
 * Moon Coin 2: The second Moon Coin is located on Donut Lifts which are located below spikes.
 * Moon Coin 3: For the last Moon Coin the player has to climb on the first fence in the Snake Block area to make the Moon Coin collectible.