March 12 (UPI) -- A GameStop store in New York gathered 270 people in Mario costumes to attempt a world record and celebrate the Nintendo character's holiday. The GameStop store located in Manhattan's Union Square counted 270 participants at its event on Tuesday, which was known as Mario Day due to the date, March 10, looking like the plumber's name when stylized as "MAR10." "He's a reminder of people's childhoods and a carefree time, and you know people still play video games well into