big differences between the two games, though the most important one is that in the household game Pontoon, the dealer gets to decide whether he or she will hit or sit; whereas in Blackjack the dealer must sit if they're on seventeen or above and must hit if they're on sixteen or below. In contrast, a Pontoon dealer can have a look at his opponent's cards and say, 'hey, I've got seventeen, but they've all got eighteen. if I sit then I lose all my money so I might as well take another card!'Wrathchild said:Aren't Blackjack and Pontoon the same game? They both involve counting to 21 .