In the aftermath of the attack on the World Trade Center on September 11, 2001, the legislature in Albany, fearing a monumental loss of revenue, passed legislation the following month, which was signed by Governor George Pataki, which included joining a multi-jurisdictional lottery game. Around the same time, for entirely different reasons, Ohio's governor also gave the green light to joining a multi-jurisdictional game. Both lotteries opted to join The Big Game, which, at the time, was offered in seven states. The added populations of the two new jurisdictions, in turn, led to a larger double matrix. The first machine continued to hold white 52 balls, while 16 gold balls were added in the second, meaning there were 52 numbers to pick from in both parts of each $1 game. On May 15, 2002, the game was renamed The Big Game Mega Millions; shortly after, it became just Mega Millions. Except for the 2010 cross-selling expansion, this was the only time The Big Game or Mega Millions simultaneously added more than one member.
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 only way to be sure that what you are buying is “official” is to purchase your tickets from a company that has agents that will purchase in the real world the Powerball tickets online that you have selected. If you are a more trustworthy person and don’t need a scanned copy of your Powerball tickets online then by all means go for an online lottery ticket provider that follows the insurance model. 
Bob Bolduc, founder of Pride Station & Stores, where the prize was actually purchased, said the multimillion-dollar winning ticket was sold at about 2:30 p.m. Wednesday. He said that in the past year the convenience store chain has sold a handful of winning tickets worth $1 million or more, and he suspects that will “resonate with a lot of lottery buyers.”

In spite of the huge popularity of this lottery draw game it is still an unknown to many that you can buy Powerball tickets online, whether you are in the US or not. To be clear, this doesn’t even mean that you have to be a citizen of the US either. No citizenship & not based in the US? You can still play powerball online and buy lottery tickets online for a number of different lottery draw games. 
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