Online casinos are digital platforms that allow players to gamble and play various casino games over the internet. They offer a wide range of games, including slot machines, poker, blackjack, and roulette, which can be played for real money or for fun. Players can access these casinos through their computers or mobile devices, making it convenient to enjoy gaming from anywhere. To participate, users typically create an account and deposit funds using various payment methods, such as credit cards or e-wallets. Online casinos often provide bonuses and promotions to attract new players. They are regulated by gaming authorities to ensure fair play and security for users.