Watch Your Step (mission)

Watch Your Step is the sole mission of the Matter Splatter Galaxy in Super Mario Galaxy. The level revolves around the Matter Splatter concept, where matter creates and removes platforms of various scenery.

Layout
Players first land on a solid platform. They then have to pass the planet until they reach a green Warp Pipe. Players then end up on a planet that requires a few Wall Jumps to get to the top and into the next planet. Players have to jump up pink platforms and destroy the Crystal to get a Spring Mushroom. Players then have to bounce up to grab the ? Coin to move the "spotlight". Once they reach the top, they must use the Sling Star to transform back into normal and land on another planet. Players must then travel through a maze; if they reach a dead end, they can fall or they can Long Jump back onto the right path. In every group of four Star Bits, a Magikoopa appears. Once players pass, the "spotlight" begins to shrink, so players have to get the Power Star quickly.