Play Blackjack in HTML5 Online or on mobile for free! Blackjack is a popular casino game, also referred to as 21. The goal of the game is to get closer to 21 than the dealer without busting (going over 21). Place your bets and get dealt two cards. Based on your two cards and the one dealer card showing, you can choose to Hit (take a card) or stand (do not take a card). In-game hints will help you play like an expert in no time!