mega jackpotAll annuity amounts shown are the average amounts a jackpot winner would receive. Mega Millions annuity payments are made on an annually-increasing rate schedule,A Mega Jackpot is the largest amount of cash that can be possibly won from a single spin in a specific slot machine. Jackpots come in a variety of styles which include stand-alone jackpots. In this guide we'll tell everything you need to know about Mega Jackpots.