Grand Slam Deluxe is the grand slam of slots, combining the best in classic slots with a legendary SuperBet game, exciting mystery win prizes, and progressive jackpot action. Grand Slam symbols are mystery win symbols that can award mystery prizes in both game modes. In SuperBet mode, every single Grand Slam symbol that lands on the reels awards a mystery win prize. Plus, if enough Grand Slam symbols land on the reels, a multiplier is applied to all of the mystery win prizes on that spin. Check out the mystery jackpot meter for an exciting mystery progressive jackpot that boasts guaranteed minimum and maximum payouts that hit often and could hit any time! Are you lucky enough to hit a grand slam of big wins with Grand Slam Deluxe!