From the Super Mario Wiki
The event is played as a team. Players must go down a river doing various tasks. The players start off by turning right to get coins out of a barrel, then go left. Afterwards, they encounter a Bob-omb, which needs to be stomped on. Then, the players must avoid Thwomps. A Ground Pound is used afterwards. They can also ground pound at the same time to defeat Cheep Cheep and Porcupuffer. Finally, the players must battle and defeat Gooper Blooper to finish the event.
Obstacles and gimmicks