Whack-a-Plant is a 1-player mini-game founded in Mario Party. All the player has to do is to Jump on the Piranha Plants to knock them down to get coins as they pop out in the pipes. If the player is too slow, the Piranha Plants will slow go into the pipes. 4 of the controlled springs from oustide the pipelines follow the player by pinpoint, the player can use them to jump far by holding the Jump button and hitting more Piranha Plants each time.