The Mini Mushroom is a Mushroom in New Super Mario Bros. Wii. It is the rarest Mushroom in the game. It is a blue Mushroom. When Mario touches it, he becomes Mini Mario. He is so small, he is quite hard to see. The only way to defeat an enemy, is by ground pounding them. Jumping on them has no effect on them. If Mario touches an enemy, he instantly dies. Mini Mario's voice is shrunk. Mini Mushroom's real purpose is to find secret areas and Star Coins. You see, Mario can go into places, he couldn't go through as regular Mario. The Mini Mushroom is helpful, but also rare. It is one of the items that appears in the Power-Up Panels minigame.