From the Super Mario Wiki
Retrieved from "https://www.mariowiki.com/index.php?title=Coin_Box&oldid=2780402"
Coin Boxes, originally known as ? Boxes, are objects introduced in Super Mario 3D Land. In that game, they are only found in World 8-1, World 8-4 and Special 1-3. ? Boxes look just like ? Blocks. Like Propeller Boxes, they are worn by Mario over his head, and do not let him throw fireballs or boomerangs, or turn into a statue. It cannot be taken off unless he hits an enemy. If Mario makes it to the Goal Pole with the ? Box, it disappears and gives an extra life. While inside a ? Box, infinite coins will pop out from it while he is moving.
In New Super Mario Bros. 2, similar objects known as Gold Blocks appear, which are revealed by hitting Coin Blocks enough times, and give Mario coins at a much faster rate than the ? Boxes. Unlike ? Boxes, however, a Gold Block will disappear once 100 coins have been collected from it.
? Boxes return in Super Mario 3D World, now shinier than a regular ? Block. This time, they work just like Gold Blocks.
Coin Boxes return under their current name in Mario Kart Tour as Mario (Hakama)'s special item. They spew coins onto the track when used. They received a minor redesign in that their edges and corners are more flat than rounded.
Names in other languages