Diamond a Dozen

Diamond a Dozen (known as Diamond Drop in British English) is a General minigame from Mario Party: Island Tour. Its American English name is a pun on the phrase "dime a dozen", which describes something that is so common as to have very little value.

Gameplay
The camera pans to the bottom of the temple area with a statement that reads "Collect the most ♦'s!" in American English or "Collect ♦s!" in British English. Soon after, the camera moves upward and the players must attempt to keep track of which hole they think has the most diamonds. The players must then quickly hit the correct button of the hole that they think has the most diamonds. The player who collects the most diamonds wins.

Controls

 * /////+ – Choose hole

In-game text

 * Rules – American English "Guess which tunnel contains the most gems, and then select it before your opponents can."
 * Rules – British English "Remember which hole has the most gems in it, and be the quickest to choose it!"

Names in other languages
Glücksfall Pozzi di diamanti