Casino online is where you can play real-money casino games on your computer or mobile device. They typically have a range of virtual casino games and live dealer tables. They also offer a variety of promotions, including signup bonuses. Some of these promotions can be sticky, meaning you will continue to receive them as long as you remain a player.

Most online casinos allow players to deposit money into their accounts using a bank card. This will create a casino online bankroll, which you can use to place bets on casino games and earn winnings. If you lose, the money will be deducted from your bankroll. You can then withdraw your bankroll (with winnings and losses accounted for) or close your account at any time. You can also set reality checks, which are designed to remind you that gambling is not a way to make money and should be played for fun only.

Online casinos are regulated and licensed in the same way as brick-and-mortar casinos are. They are subject to strict rules about how the games work and what they must include in order to be fair. They also need to adhere to local laws about gambling, which vary from country to country.

The best casino online sites have high payout rates, slick software and an excellent reputation for customer service. They also have a variety of games and accept US dollars for transactions. Some have loyalty programs that give you the chance to redeem points for free bet credits and other rewards.