progressive jackpot games have been among the most popular online casino games pretty much from the moment they were introduced. The idea of winning a huge amount of money on a single spin of the slot reels or turn of a card has the appeal that no other casino game can offer. Of course, not all of these progressive games have been created equal, so let's take a look to see what the biggest progressive jackpots out there are.

Microgaming's Mega Moolah slot currently comes on top of this list because it holds the Guinness world record for the biggest online jackpot in history. It was to the tune of £13.1 million, won by a lucky player from the UK. Thanks to the fact Microgaming is one of the most popular Game developers around, present at hundreds of online casinos, Mega Moolah jackpot grows quickly and, on average, lucky winners added $5.1 million to their home budgets.

Everything we said about the popularity of Microgaming pretty much applies to NetEnt, another giant in the world of casino games. Thus it is no surprise they share the top spot on this list of the biggest progressive jackpots. Their Mega Fortune Slot is available at hundreds of casinos and, on average, awards around €4.2 million.

Playtech’s Jackpot Giant certainly deserves its place among the biggest progressive jackpots. This game doesn’t trigger nearly as often as the other two, as the last (and only) jackpot was won more than two years ago, when a lucky player took home $6.4 million. Right now, the jackpot is even bigger, exceeding $10 million.

Other honorable mentions on this list of the biggest progressive jackpots are slots such as Hall of Gods, Aztec’s Millions, and Millionaire Genie. Of course, there are many more progressive jackpot games out there, which can occasionally award big money, but these few have been consistently making players millionaires.