Because players wager on connected machines at different casinos or online platforms, these jackpots are special in that they grow over time. Only a tiny portion of gamble online slotsevery wager goes toward the jackpot pool, which can grow to enormous proportions—often in the millions. The possibility of winning enormous sums of money is what attracts a lot of players to progressive slots. There is a tangible sense of excitement surrounding progressive jackpots because any spin could result in a huge payout.