"Super Mario Galaxy" introduced several new power-ups along with a few older items re-done. These include the Bee Shroom, which allows him to float short distances and stick to certain surfaces; the Boo Shroom, which makes him capable of floating as well as traveling through walls; the Life Shroom, which gives him three more life wedges; the Rainbow Star, granting him brief invincibility; the Fire Flower, which appeared for the first time in a 3D game; and the Ice Flower, which allows him to turn water into solid ice so he can go to otherwise unreachable or deadly places. A hidden power-up is the Flight Star, which allows Mario to fly for a while.