Double Exposure is a new variation of online blackjack. This game is also called Dealer Disclosure or Face Up 21.
You can double, but after doubling down you can’t hit. You can split up to three cards. You can re-split Aces, but if you get 10, you can’t win blackjack then. After the split you are allowed to double and hit. There is no Surrender. The dealer must hit on Soft 17.
The main difference Double Exposure from the traditional blackjack is that the dealer’s cards are faced up. It is great when you can see all dealer’s cards and it may seem to you just this type of blackjack will allow you to win. However, casinos implied new rules in order to decrease your odds. More than that, they make the house edge even higher than in other blackjack variants. The house edge increases from 0.26% to 1.47%.