We did the heavy lifting and can say that Red Dog is the best place to play online blackjack. If you want to start playing blackjack online, you’ll need the best casino sites, ranked for blackjack bonuses, game quality, and more. So, the online blackjack games offer you the biggest chance to win – and playing online is much more convenient than going to a casino. Why do so many people play blackjack online? It’s simple: the house edge in blackjack is the lowest.