Bowser Jr. stands in the top right corner of the field. Both players ground-pound, and Bowser Jr. narrowly escapes as the block he was standing on disappears. He then taunts the players from his new square.
The pair must try to force Bowser Jr. to fall by removing the square he is standing on. To do so, the players must ground-pound switches simultaneously. One player can highlight rows, and the other player can highlight columns. The sand block where a glowed row and column intersect will disappear. However, if a player is not well aligned with the switch for the row or column, it will not be highlighted. A square stops being highlighted after one second. Bowser Jr. can be trapped and made easier to remove by eliminating all of the squares around the one he is standing on. If the players fail to drop Bowser Jr. within 30 seconds, Bowser Jr. is victorious.
If the players are victorious, Bowser Jr. will struggle in midair for a second before screaming and falling. The players strike victory poses.
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