Powerbolts is a must drop jackpot feature for bingo. It features two jackpots; a Maxi Bolt which can be won once daily, and a Mini Bolt which can be won multiple times throughout the day. You can find Powerbolts in Sapphire Bingo. The Powerbolts feature is similar to a traditional bingo jackpot that works off a ball condition. The difference is it's not just one fixed ball condition, but a varied one which increases (meaning it gets easier to win) as the day progresses.