Superstar Road

Superstar Road is the ninth and final world of New Super Mario Bros. U. It is similar to World 9, but is also a homage to Star Road from Super Mario World. The portal to this world is on an island nearby Sparkling Waters and can only be accessed via a pipe. This is the only world where two of the power-ups from New Super Mario Bros. Wii, Propeller Mushrooms and Penguin Suits, can be found. There are a total of 9 levels in this world, all of which are only accessible by collecting all the Star Coins from each world.

Levels

 * Superstar Road-1: Spine-Tingling Spine Coaster: The first level of Superstar Road. This level is similar to Rock-Candy Mines-6: Thrilling Spine Coaster, but it takes place in a Acorn Plains setting and has Mega Fuzzies patrolling the area.
 * Superstar Road-2: Run for It: The second level of Superstar Road. This has a Layer-Cake Desert setting and where the player must hit the P-Switches and run as quickly as possible and hit another switch.
 * Superstar Road-3: Swim for Your Life!: The third level of Superstar Road. This takes place in a Sparkling Waters setting and where a Cheep-Chomp appears to try and eat Mario.
 * Superstar Road-4: Hammerswing Caverns: The fourth level of Superstar Road. This has a Frosted Glacier underground setting and where hammer-shaped swinging platforms appear.
 * Superstar Road-5: Spinning Platforms of Doom: The fifth level of Superstar Road. This looks similar to Soda Jungle-4: Painted Swampland, but has rotating platforms.
 * Superstar Road-6: Fire Bar Cliffs: The sixth level of Superstar Road. This has a Rock-Candy Mines setting and where there are many giant Firebars.
 * Superstar Road-7: Lakitu! Lakitu! Lakitu!: The seventh level of Superstar Road that has a Meringue Clouds setting and where Lakitus appear.
 * Superstar Road-8: Pendulum Castle: The eighth level of Superstar Road. This looks similar to Peach's Castle-Princess Peach Castle Sprite.png: The Final Battle, but features Ball 'n' Chains and Donut Blocks instead.
 * Superstar Road-9: Follow that Shell!: The ninth level of Superstar Road. This takes place a sky setting, but there are trails of Coins that can only be collected by Koopa Shells.

Boost Rush Courses

 * Hammerswing Caverns - Superstar Pack
 * Lakitu! Lakitu! Lakitu! - Superstar Pack