The American Powerball originally started life way back in 1988 and was known as "Lotto America". In 1992 this became the Powerball lottery, with the first official Powerball draw being held on April 19th, 1992. The game has grown and evolved over the years with new States joining (now totalling 44 States) and various changes being applied to the ball and prize structure. These include a change in the annuity prize payments from 20 yearly payments to 30, and the addition of a cash option for the jackpot. In addition, players are now able to purchase their Powerball lotto tickets online.
State lotteries have become a significant source of revenue for states, raising $17.6 billion in profits for state budgets in the 2009 fiscal year (FY) with 11 states collecting more revenue from their state lottery than from their state corporate income tax during FY2009. Lottery policies within states can have conflicting goals. Given that instructions are passed down from state legislatures, lottery implementation is often expected to be carried out with reduced advertising and funding while still producing the same amount of revenue. This issue led states to look for loopholes in the system. Massachusetts, for example, had its advertising budget dramatically cut, and therefore started using free-play coupons as money to pay for advertising. This led to an IRS investigation into alleged non-reporting of income because the IRS considered the coupons to have monetary value.
On October 28, 2017, the price of a Mega Millions play doubled, to $2; the first drawing under the current price point was October 31, 2017. The Mega Millions double matrix changed, from 5/75 + 1/15 to the current 5/70 + 1/25. The starting jackpot became $40 million, with minimum rollovers of $5 million. The "Megaplier" option (which again is not offered in California) was retained, with an adjustment to its multipliers. (The final jackpot for the $1 version was $30 million, which was not won; the initial jackpot for the new version would still be $40 million with a jackpot hit.)
Wednesday’s jackpot might have been the second-biggest, but many expected it to actually surpass that $1.6 billion record if that lucky Massachusetts ticket-holder hadn’t hit on the right numbers. That’s because of what Kelly Tabor, a spokeswoman for the Colorado Lottery, calls “jackpot chasers,” casual players who rush out to buy a ticket when the jackpot gets big enough.
First introduced in 1996, the USA Mega Millions was originally known as ‘The Big Game’ - and looking at its payouts over the years, it’s no surprise as to why. With a starting jackpot of $40 million and a record jackpot of $656 million to date, winning the USA Mega Millions is no joke - although when you hit the big one you’ll be laughing all the way to the bank.
Mega Millions' second-largest jackpot, $648 million, was for the December 17, 2013 drawing. Two winning tickets, one each from California and Georgia, were sold. The holder of the Georgia ticket claimed the next morning; they selected the cash option, which amounted to $173,819,742.50 before withholdings. The holder of the California ticket claimed on January 3, 2014. (The California ticket holder received an equal share, but potentially a larger cash-option amount, as California lottery winnings are exempt from state income tax)." 
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.