If you’re looking for the biggest progressive jackpots in Ireland, then you should look no further than Mega Moolah, Arabian Nights, and Major Millions. These three slots nsistently offer jackpots of €1 million or more, making them the perfect choice for those looking to win big. Not only do these slots offer huge potential payouts, but they are also available at some of the best online slots sites in Ireland. The biggest jackpot win to date has been over €19 million, won in Mega Moolah and their Absolootly Mad option - a game from Games Global.