Mega Moolah game is a progressive jackpot slot. Thus, it will not pay much even in the long run unless you hit a jackpot. Theoretical return to player is 88.12% for the classic Mega Moolah slot. The other slots from the series feature a bit bigger payout percentage, above 94%. Still, it isn’t promising. However, due to the nature of progressive jackpots, it can pay hugely. That is why the house edge is bigger than usual.