US Mega jackpot rollover set to break record The jackpot in the US Mega Millions lottery has triggered a frenzy of ticket buying with wanabe winners hoping to claim the $586 million prize. As it stands its is the fourth-largest jackpot in US history, but if the rollover jackpot goes unclaimed on Tuesday, the next draw will probably shatter the record of $656 million. Officials say the jackpot could approach the once-unheard of one billion US dollar mark, should the rollover continue to Friday.