Spooky Towers Galaxy

Star 1: Momoko's Mansion
Mario must rescue Momoko Asuka who is trapped at the top of the tower.

Secret Star 1: Trapped In The Wall
Mario must use the Boo Mushroom to go through a wall with a star-shaped stain on it where he will find the Secret Power Star.

Star 2: The Matter Splatter Illusion
Mario must make his way through a planet like Matter Splatter Galaxy.

Secret Star 2: Keep On Going
Mario must ignore the Normal Power Star and continue to follow the matter until he finds the Secret Power Star.

Star 3: Haunted Sliver Stars
Mario must find 5 Sliver Stars in the Spooky Towers.

Secret Star 3: Through The Ghostly Goo
Mario must find a secret Launch Star which will take him to a planet with Toxic Goo and the Secret Power Star.

Star 4: King Boo's Basement
Mario must make his way through the Basement and fight the King Boo at the end.

Secret Star 4: Light The Torch
Mario must use the Fire Flower to light all the Torches in the Basement to make Secret Power Star appear.

Speedy Comet (Red): Momoko's Mansion Speed Run
Mario must beat "Momoko's Mansion" in under 3 minutes.

Daredevil Comet (White): King Boo's Daredevil Run
Mario must beat the King Boo without getting hit.

Cosmic Comet (Blue): Comsic Mario Goes Ghost Hunting
Mario must beat Cosmic Mario to the Power Star.

Fast-Foe Comet (Yellow): Fast-Foe Matter Splatter
Mario must get to the power star in "The Matter Splatter Illusion" with the matter moving faster.

Purple Comet (Purple): Purple Coins In The Basement
Mario must collect 100 Purple Coins in the basement.

Combo Comet (Pink): Paranormal Boo Combo
Mario must defeat 30 Boos using the Rainbow Star.

Flash Comet (Orange): Ghostly Goo Flash
Mario must find the Power Star in "Through the Ghostly Goo" in the dark, wait for the flash.

Green Comet (Green): Green Stars

 * Green Star 1
 * Green Star 2
 * Green Star 3
 * Green Star 4
 * Green Star 5
 * Green Star 6
 * Green Star 7
 * Green Star 8
 * Green Star 9
 * Green Star 10
 * Green Star 11
 * Green Star 12
 * Green Star 13
 * Green Star 14
 * Green Star 15

Bosses

 * King Boo