While a mere $100 million prize will start to lure many infrequent lottery players in, that doesn’t compare to the numbers who buy tickets when the jackpot approaches $300 million, said Georgia lottery spokesman J.B. Landroche.

“If the jackpot rolls over tonight, there’s a real possibility that this particular Mega Millions jackpot could become the largest in U.S. history,” he said.

The biggest single-ticket winner was a Powerball jackpot of $314.9 million awarded on Christmas Day 2002 to a West Virginia man. But Mega Millions’ predecessor, the Big Game, had a $363 million prize that was split in May 2000 between a swimming pool installer from Shelby Township in Macomb County, Mich., and a suburban Chicago family.