Playing as Sonic, the player must make contact with each bumper on Casino Night Zone while Wario tries to attack them. Each bumper will disappear after Sonic hits them. The player has 2 stocks and the opponent has 1 stock, but the event will continue even if Wario is KO'd.
The ranking the player receives is based on how much time the event takes to be completed. The specific conditions for this are listed below.
> 0:43 '33
Prior to Beta 1.2, oddly, the event could be completed even if the upper-right bumper had not been hit.
This event is similar to Event 4: Cleaning House in Skyworld from Super Smash Bros. Brawl, in which the player must attack stage elements and they will not appear for the rest of the match upon doing so.