The jackpot's value has been skyrocketing, as nobody has been able to successfully set off the jackpot. The value grows with every spin of the reels, as a portion of the wagered amount goes into the jackpot's pool. The previous record for the game is £13,212,882, which was won by Jon Heywood at Betway Casino in 2015. Microgaming and Betway seized on the marketing blitz that followed, and it's likely that we'll see that again.
The Mega Moolah Mega is one of the largest online progressives that is offered online. It's joined by NetEnt's Mega Fortune and Mega Fortune Dreams, as well as other big-name prizes like the Major Millions and King Cashalot (also from Microgaming) as being million dollar jackpots offered online.
We're waiting for the prize to be hit, and we'll be updating readers as soon as its hit.
Link: Mega Moolah Mega Jackpot