The ? Block (known as the Mystery Block in Super Mario Land.
The Prize Block in Super Mario World) is one of the many blocks found in the Mario universe, and one of the most common. Question Blocks are usually seen floating in midair, often containing Coins, Super Mushrooms, or Fire Flowers. In some games (for example Paper Mario and Mario & Luigi: Superstar Saga, as well as several classic platformers) there are some invisible Item Blocks. At certain levels, hitting a Brick Block can result having the player wear the ? Block. While the player is wearing it, the ? Block will let the player obtain coins by moving. The block can disappear though, after the player wears the block for too long.