World Star (Super Mario 3D World)

World Star (known as World 9) is the first special world and the ninth world in Super Mario 3D World. It takes place above the Sprixie Kingdom, and can only be accessed by completing World Bowser, and taking the Rocket in World 1 which was built by the Sprixie Princesses. It contains nine standard courses, a Captain Toad course, and a Sprixie House. Upon completing, Rosalina becomes available as a playable character. After completing Cosmic Cannon Cluster and collecting the necessary amount of green stars, stamps, and gold flags, the rocket to World 10 will be available.

Trivia

 * World Star's music is a slowed-down remix of Super Bell Hill's music from Super Mario 3D World.