Online casinos are where gamblers play casino games via a computer or mobile device. Most of the same types of gambling available at traditional brick-and-mortar casinos can be found online, including roulette, blackjack, video poker, and baccarat. In addition, there are several live dealer casinos online, where players can interact with a human croupier in real time while playing.

Game variety is another important factor when evaluating an online casino. The best sites offer a broad selection of titles to choose from, offering both classic casino games such as slots and table games, plus more niche options like keno and scratch offs. They also feature a good mix of wagering limits to suit different budgets.

Banking methods are an essential part of any casino online, and the top US casinos provide easy access to responsible gambling tools for all players. These include account limits, age and location verification, as well as links to external help organizations for those struggling with addiction.

New casino online sites often feature special introductory offers to lure in new customers. These can take the form of free play credits, no deposit bonuses, or exclusive game promotions. Some also offer a loyalty program where players can earn and redeem rewards through their gaming activity. Regardless of the type of offer, these incentives are designed to increase customer retention and boost revenues for casino online operators. This helps to ensure that the industry continues to thrive as new technologies change gambling habits.