Grandmaster Galaxy

Grandmaster Galaxy is the final galaxy that appears in Super Mario Galaxy 2. The galaxy is located in World S. This galaxy is unlocked when the player gets all 240 stars and is an obstacle course with puzzles, enemies and Power Stars at the end. This galaxy contains two extra Stars: one for completing the level and another one for doing it again, but with only one hit point. In the last case the player gets the star from Rosalina.

Flower Grapple Planet
The first planet is where Mario must use Yoshi to swing on the flower grapples to reach the Launch Star. There are several obstacles along the way, such as Mines and [[Bullet Bill]s.

Flipswitch Planet
After using the Launch Star from the first planet, Mario and Yoshi lands on a planet with Flipswitches, with a backdrop showing moving sprites of items from Super Mario Bros.. The player must touch all the Flipswitches (while avoiding laser-firing robots) to reveal the Launch Star.