A casino online is a virtual or Internet-based platform that allows players to access and play a wide variety of traditional casino games. The best casino online sites feature a comprehensive game selection that is often more extensive than what is available in brick-and-mortar casinos, and they also offer an array of bonuses and promotions to attract and retain players.

Some of the most popular online casino games are slot machines, which offer a variety of themes and payouts. In addition, many online casinos offer live dealer experiences that allow players to interact with real dealers through video feeds. These experiences are designed to recreate the excitement of a real-world casino experience without the need for travel or expensive equipment.

Casino online operators must make sure that they offer a variety of payment options in order to appeal to customers. This includes accepting a range of credit and debit cards, e-wallets, and digital currencies. They must also have security measures in place to protect customer data and financial transactions.

In the United States, legal casino online gambling is only available in a few states. West Virginia has a few licensed options, including BetMGM, Caesars, and DraftKings. In Pennsylvania, a dozen online casinos are currently operating with thousands of slots and table games, as well as poker rooms and live dealer options. However, online sports betting remains illegal in the state, though some top operators may still be able to maintain partnerships with tribal casinos.