progressive jackpotProgressive jackpots are a unique form of casino gaming that offer the potential for life-changing payouts. At their core, progressive jackpots are built on a system where a portion of each wager is added to a growing prize pool.What Is a Progressive Jackpot? A progressive jackpot is a top prize on a gambling game (usually a slot machine) that gets progressively bger until it’s been won. At that point, the size of the jackpot returns to its starting amount