The scene resembled a real-life "Mario Party," or perhaps a "Super Mario World," with fans cosplaying as variations of Nintendo's iconic mustachioed plumber from practically every era.
That's because Tuesday was March 10 - or "MAR10," which looks like "Mario."
GameStop gave out a $5 store credit to anyone dressed in a Mario costume.
GameStop is trying to break a world record for the most people dressed up as Mario in one place. China set the record a couple of years ago.
"He's a reminder of people's childhoods and a carefree time, and you know people still play video games well into adulthood," said GameStop Director of Communications Nicolle Robles.
You can watch Eyewitness News reporter Anthony Carlo's full report in the media player above.
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