Blackjack Pro Series has an added sidebet, the Double Jack sidebet, where you can win 10, 25 or 100 times your bet amount! If your first card dealt is a Jack, you win 10 times your bet. A pair of Jacks will bag you 25 times your bet and Two Jacks of Spades will return a massive 100 times you bet! Play up to three hands against the dealer at once. Four deck blackjack.