Yes and no. Pontoon is a blackjack variant that is popular in Britain and Australia. The main differences are that in pontoon, players must hit (known as a twist) if they have fourteen or less, you can double down at any time and can win 2:1 if they manage to accumulate to five cards without busting. Lastly, the pontoon (blackjack) pays 2:1 for a twenty-one-point hand but sees the house win ties.