A casino online is a real-money gambling website that allows players to wager on various games of chance using a computer or mobile device. Many of these sites feature video poker, slot machines, table games, and even live dealer tables. Some casinos offer a free trial period where you can try out the site and games before you start playing for real money. Others have customer support staff available around the clock to answer any questions that may arise.

The best online casinos use encryption to protect the financial and personal information of their players. They also ensure that the games they offer are fair by undergoing regular tests to verify their integrity. They are also licensed by a government regulator and follow responsible gambling policies. These features are what set regulated online casinos apart from unlicensed ones.

Most online casinos accept US Dollars, but you can choose to play in a currency that you are comfortable with. For example, some casinos have a dedicated page for UK players, while others accept Euros and other major currencies. In addition, many reputable casinos have mobile apps that let you gamble on the go.

Before playing at an online casino, make sure that it is legal in your state. If it isn’t, you could face fines or even get arrested. To avoid this, set time and spending limits for your gaming sessions, and never gamble more than you can afford to lose.