Some are dreaming of buying yachts and private islands. But the big benevolent dreamers, those who want to change the world with the Mega Millions winnings, have their eyes on a completely different prize.
Whether it's finding a cure for breast cancer or feeding the hungry, do-gooder gamblers have a wish to help the needy with the $640-million prize. And, as they nab up their tickets, they're also taking to Twitter to share what they would do #IfIHitTheMegaMillions.
Check out our slideshow of inspirational lotto players and suggestions on how you can spend your jackpot if you take home the grand prize.