The United States is in the grip of Powerball fever.
The jackpot for Saturday's multi-state lottery has grown to $600 million for a single winning ticket. With millions of tickets being sold each hour at $2 each, Powerball officials say the jackpot is likely go even higher before the numbers are drawn.
Winners must match five numbers and a special Powerball to claim the entire prize.
The odds of winning the jackpot are one in 175 million.
The largest lottery jackpot in U.S. history was a $656 million prize split among three winners last year.
The world's biggest lottery has been Spain's El Gordo, which divided $3 billion among thousands of winners last year.