World Star (New Super Mario Bros. 2)

World Star is the final world that appears in New Super Mario Bros. 2. It requires 90 star coins to enter it. Dry Bowser is the boss of the castle. It can be unlocked by beating Bowser in World 6. Unlike the first worlds, has Star Coins with moons imprinted on them rather than stars. World Star appears to be similar to World 9 and World S, as they are all bonus worlds unlocked by beating the final boss.

This level take place at night. It consists of many Brick Blocks and ? Switches which can be used to make various groups of Brick Blocks rotate on a point. Destroying too many Brick Blocks can open up bottomless pits, though there are some Used Blocks that prevent the level from becoming impossible. There is a Red Ring that has a Coin Coffer come out, when defeated it will give out Red Coins.

Moon Coins

 * Moon Coin 1: The player needs to hit the right brick to use the P-Switch. Once pressed, bridges will temporary open up, and the player needs to fall all the way down. Once down there, there's a Cannon Pipe, which shoots the player through the first Moon Coin.
 * Moon Coin 2: The player needs to Ground Pound 2 rows of bricks, at the right of the Moon Coin, and then use a Koopa Shell to get it.
 * Moon Coin 3: The player should jump down before hitting the ? Switch to get the last Moon Coin.

This level takes place high in the sky, on top of what is supposed to be a deserted castle, where grass and other vegetation has grown on the rooftops, making this level loosely similar to Sky Sanctuary Zone from Sonic the Hedgehog 3. Super Leaves appear here, aiding Mario throughout the level. The level is abundant in Red Koopa Troopas, Donut Lifts and moving platforms.

Moon Coins

 * Moon Coin 1: Directly above a moving platform just after two POW Blocks.
 * Moon Coin 2: After the checkpoint, the player can see the Moon Coin above a pit. The player needs to use the Koopa Shell, on the right, in order to get the Moon Coin.
 * Moon Coin 3: Under some Donut Lifts, Mario will need to jump as soon as he gets the Moon Coin.

This rather short level's theme is a combination of a beach and Ghost House theme. Seven Whomps and four Super Whomps are in this level. There are also seven groups of Peepas throughout the level.

Moon Coins

 * Moon Coin 1: Before the checkpoint, there is a blue pipe. To the left of the pipe is a hole. The player should go in the hole and avoid the Peepas to get the Moon Coin.
 * Moon Coin 2: After the checkpoint, the player should stand on the platform AFTER the second Whomp. Some blocks will appear, allowing Mario to reach the second coin.
 * Moon Coin 3: Before the end of the level, the player should have the last Super Whomp fall. Then, the player should use him as a platform to get on top of the high ledge. Follow the coins over to a ledge with 3 coins. Stand in the middle to hit an invisible vine block. The player can climb the vine to reach the Moon Coin.

This is an auto-scrolling level that features a Porcu-Puffer. There is also a Mini Mushroom in this level, which is required to get the second Moon Coin.

Moon Coins

 * Moon Coin 1: The first Moon Coin is before the checkpoint. It is in clear view on the left. Make sure that Mario grabs it before the screen scrolls to the right
 * Moon Coin 2: At the end of the Porcu-Puffer area is a Mini Pipe. To enter it, make sure that Mario grabbed the Mini Mushroom at the start of the level. Enter the pipe to get the second Moon Coin.
 * Moon Coin 3: The final Moon Coin is in the second area with the Porcu-Puffer. It can be found at the bottom of the screen. Just follow one of the platforms to the bottom to get the Moon Coin.

This level combines the elements of grass and sky. Lakitus appear alongside red and green Koopas and Paratroopas. The level also contains a Gold Ring and Dropping platforms.

Moon Coins

 * Moon Coin 1: At the star of the level, Mario should defeat the first Lakitu and take his cloud. Then Mario should ride the cloud up to get the first Moon Coin.
 * Moon Coin 2: The second Moon Coin can be seen on the balancing platforms after the checkpoint. Ride the balancing platform down to the second Moon Coin.
 * Moon Coin 3:

This level is, in a way, an underwater fortress. The background matches the ghostly setting to level 2 of World Star. The key enemy (and the only enemy) in this level is the Fishbone. The level also features a Red Ring and a Roulette Block.

Moon Coins

 * Moon Coin 1:
 * Moon Coin 2:
 * Moon Coin 3:

Moon Coins

 * Moon Coin 1:
 * Moon Coin 2:
 * Moon Coin 3:

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

Moon Coins

 * Moon Coin 1:
 * Moon Coin 2:
 * Moon Coin 3:

Trivia

 * This is the only special world to not be unlocked via a cannon.