Assuming that you have chosen an online lottery company that physically purchases tickets online. How you play Powerball online is the following; Firstly, pick whether you want to buy group Powerball tickets online or single tickets. Almost all online lottery ticket providers offer the player to buy group tickets in addition to single ticket purchases. An online group game ticket in the Powerball is the same concept as a work syndication for the lottery, only nowadays thanks to the wonders of the internet, you don’t have to rely on the people in your vicinity – you can join a syndicate that is made up of hundreds, if not thousands of people scattered all across the globe. 
Illinois joining Powerball on the expansion date, it became the second multi-jurisdictional lottery game (after Mega Millions, which Illinois already participated in) whose drawings were carried nationally. Both games' drawings were simulcast via Chicago cable superstation WGN-TV through its national WGN America feed. WGN-TV aired Illinois Lottery drawings nationally from 1992 to 2015 after acquiring broadcast rights from Chicago's Fox owned-and-operated station WFLD in 1988, which took the rights from WGN-TV in 1987. Powerball drawings were aired on WGN-TV and WGN America on Wednesday and Saturday immediately following the station's 9pm (Central Time) newscast with the Mega Millions drawings being aired Tue and Fri evenings after the newscast. WGN served as a default carrier of Mega Millions or Powerball where no local television station carries either multi-jurisdictional lottery's drawings.
The Powerball jackpot was last won on 11 August 2018 when a single ticket purchased in Staten Island, New York, matched the winning numbers to claim the entire $245,600,000 ($147,844,558.62 cash) prize. The winner of the jackpot was identified as Nandlall Mangal, a 42-year-old Guyanese immigrant in the US who vowed to continue working even after the amazing Powerball win.
With an impressive $40,000,000 starting jackpot, US Powerball offers the biggest starting jackpot of any world lottery, and its $1.58 billion personal best from January 2016 is the all-time lottery world record! Match all five main numbers and the Powerball and you could be celebrating a multi-million dollar win in America’s favourite lotto! When you play Powerball online, in addition to the jackpot you can win one of eight exciting secondary prizes including a second prize that starts at $1 million!

Unlike Hot Lotto, which used a random number generator during most of its run (including the December 2010 drawing whose jackpot was "won" by Eddie Tipton, a MUSL employee), Lotto America is drawn using physical ball machines and numbered balls. One machine draws the five main numbers while another is used to draw the "Star Ball". As of September 1, 2018, none of these drawings have been made available to the viewing public; these drawings are believed to be held in Tallahassee, Florida, even though Florida does not participate in the game.[5]
Arizona Arkansas California Colorado Connecticut Delaware District of Columbia Florida Georgia Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island South Carolina South Dakota Tennessee Texas US Virgin Islands Vermont Virginia Washington West Virginia Wisconsin Wyoming
Some lotteries sell Powerball® tickets over the Internet, but the service is only available to residents of that jurisdiction. The sale of Powerball tickets over the Internet or by mail across jurisdictional borders is restricted. Lotteries may refuse to pay out prize money on Powerball tickets purchased on any website other than their own. Please contact your lottery with any further questions.

The two different methods, both offer you, the player, the same user experience and the only difference is in the back end of how the online lottery ticket provider works. The two methods that online lottery sites use differ in one key way; They either have agents and employees all over the world that physically purchase tickets on behalf of clients or, the more recent phenomenon is when companies essentially take out an insurance policy on every ticket which is tied to the size of the jackpot. This is the difference between you playing the lottery online and betting on the lottery online*. In the latter option you are, de facto, not playing the US Powerball online but rather you are placing a bet with an insurance company on the outcome of the corresponding Powerball draw. 
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