Hurry-Scurry Galaxy

Hurry-Scurry Galaxy is a galaxy in Super Mario Galaxy. Whenever Mario or Luigi step on a tile, it'll disappear within a few seconds. There is a planetoid with the shrinking tiles and a black hole in the center. Therefore, Mario of Luigi can't afford to stay in one place too long.

Trivia
In the misson, "Hurry, He's Hungry " in the Sea Slide Galaxy, most of the level's layout is similar to this galaxy.