An online casino is a digital platform that allows players to wager real money and enjoy games similar to those found in brick-and-mortar casinos. Some offer a full gaming experience while others limit their offerings to certain types of games or sports. Regardless, the best online casinos have high standards for security, user-friendly interfaces, and mobile accessibility. These sites also support a range of secure payment methods and feature customer service that is responsive and helpful.

The best real-money online casinos have a vast library of games to appeal to different tastes. Slots dominate with tens of thousands of titles in multiple themes, while traditional table games like blackjack and roulette are offered in several variations. Video poker is popular as well, with several variants available. Some online casinos go the extra mile to provide a more immersive experience by offering live dealer tables, bridging the gap between virtual and traditional casino games. Other options include specialty games like bingo and keno.

The most legitimate online casinos have a solid reputation and are licensed by reputable regulatory authorities. They must abide by strict rules and regulations to retain their license. Additionally, they must display these rules and regulations on their websites for everyone to see. Additionally, they must have a reliable payout system that ensures players can withdraw their winnings quickly and without hassle. This can be assessed by checking if the website supports various deposit and withdrawal methods, including credit cards, e-wallet solutions, and bank transfers.