World Star-6 (New Super Mario Bros. 2)
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World 
Star-6 is a level in World Star from New Super Mario Bros. 2. It is the third-to-last level in the game. Most of this level takes place in an underwater fortress.
Layout
The level begins on a small emerged area of the fort, with a ghostly background and three Brick Blocks. To the far right there is a vertical passage with coins, leading to an underwater fort where Mario must reach a Warp Pipe avoiding Fish Bones. This pipe leads Mario to a horizontal, auto-scrolling corridor, where he can find a ? Block containing a Super Leaf and a Fish Bone. Some Fish Bones and coins over a pit are then found, followed by a passage containing more Fish Bones in it. After a pit where coins in bubbles are found, Mario encounters a group of six Fish Bones. The Checkpoint Flag is then found, along with two Brick Blocks, one of which contains a Fire Flower. Mario must then travel up, where he encounters Fish Bones and a Pipe that Mario can through fireballs into to release three 1-Up Mushrooms. The level then moves horizontal again, and a Roulette Block and some groups of Brick Blocks are found. Blue Warp Pipes blowing bubbles are then found, along with a Red Ring. After another group of Fish Bones, Mario reaches the end of the passage, where there is another Warp Pipe leading to the Goal Pole area.
Moon Coins
- Moon Coin 1: This Moon Coin can be easily collected at the start of the main area of the level. However, it is guarded by two Fish Bones.
- Moon Coin 2: Entering a purple pipe in the underwater area, Mario or Luigi can get the second Moon Coin in a small room.
- Moon Coin 3: The third Moon Coin is at the end of the main space, among some Fish Bones.
