Debra A. Roberto of Stoneham has won a $10 million grand prize — the largest instant prize in America —in the new Mega Cash game from the Massachusetts State Lottery.  Roberto opted to receive 20 annual checks for $500,000, instead of receiving the millions upfront.

"Honest to God, it's not changing my life," the mother of three said. "People are saying, 'You're full of it.' No, I'm not. ... Outside of having an exceptional Christmas, I haven't thought beyond that. Christmas is going to be fun at our house."

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