Super Mario Galaxy 2/Mario Squared Galaxy

Star 1: Make Mario a Star
For this first galaxy of the World S, you land on a flat planet that looks like a pixelated 8-bit Mario. This galaxy is composed of blue ?-plates, lava squares and green plates. You must activate all of the blue ones to make the Power Star appear. Just be careful of the green ones that disappear when you walk on them and of the lava squares, of course.