Tonight, if the Mega-Millions jackpot is not shared, the winner will enjoy the largest lotto prize in world history at $1.6 billion. Two changes created these huge jackpots; doubling of the price to $2/ticket and reducing the chance of winning from 1 in 258,890,850 to 1 in 302,575,350. This was done because of fear of “jackpot fatigue” from paltry prizes of $100 million. In FY2018, lottery sales totaled $77.7 billion.