Progressive Jackpot blackjack features a side bet that contributes to a growing jackpot pool. Players make this optional bet alongside their regular wagers, with a portion of the bets going toward the jackpot, which increases until won, often through specific rare hands. While the potential winnings can be significant, the odds of hitting the jackpot are generally low, and conditions for winning vary by game version. Players should prioritize basic blackjack strategy for their main bets, as side bets often carry a higher house edge.