rollover: a rollover occurs when a jackpot is not won; it is carried over to that game's next drawing. powerball, lotto, lucky money, and mega millions all use rollovers to increase their jackpots when no one wins a drawing. lucky money has a $2 million jackpot cap, after which any money in excess must roll down. florida lotto does not have a jackpot cap and can roll over as long as no one matches all six numbers. powerball had a rollover cap but as of the 2012 game modification and conversion to a $2 price point game, no longer has a cap.