Crossover 21 is a challenging and unique Blackjack-type card game. Place the cards onto the 6x6 board to try and make as many 21's as possible in the rows and columns. The cards will clear as you make 21's. Be careful not to bust, or else the spots on the grid will become locked. Keep placing cards until you run out of moves to build up your score. The longer you play, the harder the game gets!
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