A casino online is a virtual gambling hall, where players wager real money on various casino games. These games range from blackjack and roulette to slot machines and video poker. Some of these sites also offer live dealer games. Unlike land-based casinos, which can have hundreds of different games on their floors, online casinos tend to focus on a smaller selection. This is because running costs are much lower for virtual games.

To attract new players, many online casinos offer a large signup bonus. Some also offer reload bonuses, game of the week promotions and tournaments. In addition, players can earn loyalty program points that can be exchanged for additional betting credits.

While some casinos offer a browser-based version of their website, others have dedicated mobile apps that deliver a more streamlined and immersive gaming experience. These apps are available for iOS and Android devices and can be accessed wherever there is an internet connection. Some casinos even allow you to deposit and withdraw cash at participating convenience stores through the PayNearMe service.

In the US, a good number of regulated online casinos accept debit and credit cards for deposits and withdrawals. Other options include ewallets, which offer greater levels of security and flexibility, and payment vouchers, which enable you to better manage your funds. Some of these methods may have restrictions on daily, weekly and monthly transaction limits.

If you have any concerns about gambling addiction, most reputable online casinos have a range of self-help tools to help players limit their play time. This is particularly useful for players who are experiencing financial, relationship or employment problems that can be exacerbated by gambling. Some of these websites also have links to external resources for further support.