For an extra $1 per play you could multiply your prize by up to 5 times (except the jackpot).

The Power Play multiplier number is chosen by a wheel spin during the Powerball drawings held at 9:59 p.m. Wednesdays and Saturdays.

Power Play multiplier number determines by how much a winner's prize will be multiplied

Every time the jackpot reaches more than $25 million over the last jackpot record, it will increase in increments of $25 million (annuitized) per drawing until it is won. All cash in excess of each $25 million increment is added to the “Match 5 Bonus Pool.”