Unclaimed prizes are kept by the lottery jurisdiction. If a Grand Prize goes unclaimed, the money must be returned to all lotteries in proportion to their sales for the draw run. The lotteries then distribute the money, based on their own jurisdiction's laws, to other lottery games or to their jurisdiction's general fund, or otherwise as required by law.
The conditions for Florida joining Powerball included a move of the live drawings from Iowa to Universal Studios in Orlando. The three hosts rotating announcing duties from Universal Studios were Tracy Wiu, Elizabeth Hart and Scott Adams (MUSL headquarters remained in Iowa, where its other draws are held). The wheel that was used to determine the Power Play multiplier was retired when the drawings moved to Florida; a random number generator (RNG) was used until the 2012 format change.
One funny story concerning the Powerball draw came in March, 2005 when 110 players matched all five winning numbers, minus the Powerball (22, 28, 32, 33 and 39). The Powerball lottery officials, who were understandably suspicious, paid out nearly $20 million. It soon came to light that a biscuit company from New York named Wonton Food had printed six numbers to go in their fortune cookies and these numbers really had proved to be lucky, as they were the five Powerball numbers, minus the Powerball! Unfortunately for the 110 players, they were just two off the Powerball number of 42, as the number 40 had been predicted in the fortune cookies.
The structure of the draw is one which regular lottery players will be very familiar with; players must pick 5 regular numbers from a pool with a total of 69 numbers and in addition to these regular number picks, you also choose one bonus ball (known as the Powerball) from a pool of 26. These two pools of numbers are mutually exclusive and remain completely separate throughout the drawing procedure. In order to jackpot the US Powerball, you need to match all 5 regular numbers and the Powerball. Do this and you are instant Powerball millionaire – it’s as simple as that!