Many of these life-changing jackpots have been won over the past ten years, and most wins occurred on a famous online slot machine from Microgaming called Mega Moolah.

777 is used on most slot machines in the United States to identify a jackpot. As it is considered a lucky number, banknotes with a serial number containing 777 tend to be valued by collectors and numismatists. The US Mint and the Bureau of Engraving and Printing sells uncirculated 777 $1 bills for this reason.