A ? Block (alternatively Question Mark Block, Question Block, Mystery Block, Prize Block, or simply ?) is one of the many Blocks found in the Mario universe, and one of the most common. ? Blocks are usually seen floating in midair, often containing Coins, Super Mushrooms, or Fire Flowers. They may also be invisible. Beginning in Super Mario Bros. 3, there are different ways to hit the block other than simply jumping into it from below, like using a tail whip with a Super Leaf or Tanooki Suit, or