Playing online progressive slots can change your life in just one spin of the reels, because you can win a truly life changing sum of money. Online Progressive slots are video slot machines where the jackpot keeps growing bigger and bigger until someone wins. The progressive jackpot is able to build because multiple machines are linked together between online casinos to form one large progressive jackpot that grows quickly when multiple players are contributing to the jackpot. When the jackpot is hit, it starts building up again with a minimum set amount. Many casinos link their progressive slot machines together and that's why you can find the same slot with the same progressive jackpot at different casinos.