Ghost Block

An  Block (おばけブロック, Obake Burokku) is a very rare, possessed ? Block that appears in New Super Mario Bros. Wii. Only four of them appear in the secret area in. They guard a Star Coin. They resemble a normal ? Block, but as the player approaches, they turn purple as they float over the character and throw themselves at the player (a very similar mechanism is used by an Obake Stand), breaking apart and releasing a coin if they hit the floor or a platform. They can be distinguished from real ? Blocks by looking at the question mark; unlike the real ? Blocks, the question mark does not move, similar to the ? Blocks in Super Mario Bros.

Obake Blocks also appear in New Super Mario Bros. U, New Super Luigi U and New Super Mario Bros. U Deluxe in multiple haunted levels.