NASPL Insights December 2014, I assessed the behavior of the Powerball and Mega Millions games in the eleven months since California joined the Powerball game. I found that while sales at jackpots below $100 million had remained fairly steady, the sales response to jackpots approaching $300 million was less than half what it had been during the “base period” between Feb 2012 (when Powerball raised its price to $2) and April 2013 (when California joined). I went on to project the probability distribution for jackpots greater than $300 million in the coming year. The difference between the games was stark: Powerball was more likely than not to have three or more such events, while Mega Millions was more likely than not to have no more than one.