This is why any reputable online casino from the newest one on the market to those that have been around for years all want to have Mega Moolah in their games libraries. Mega Moolah is a jackpot slot that will feature a few times on this list, and the reason for that is simple: it is one of the most popular progressive jackpot slots around. There aren’t many lottery draws around the world that pay out a jackpot of £19m, which explains why online casino gamers are happy to try their luck with jackpot slots instead.