Player One takes on the role of Sonic while Player Two brandishes Mario's persona. These two face off against their doppelgängers, three of each, on Sonic's Green Hill Zone stage. The enemies will appear in alternating order, starting with Sonic. Two appear on the stage at a time, so killing both will result in one of each on the stage.
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- The name of this event match, and the description imply that this event alludes to Mario & Sonic Olympic Games, the first official Mario and Sonic crossover.