A free Blackjack game, will never offer you to purchase anything.
Game rules
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One deck game, shuffling every hand.
Blackjack pays: 3 to 2
Winning Hand: 1 to 1
Late surrender: Yes
Early surrender: No
Double Down: Yes, on any two cards
Double Down after split: No
Insurance bet: 50%
Insurance pays: 2 to 1
Split Aces: Yes, only one card per hand
Dealer stands on: Soft 17