Casino is an establishment for certain types of gambling. Most people think of Las Vegas when they imagine a casino, though there are casinos in many places. In the United States, casinos are often part of huge resorts and offer a wide range of games. Many are operated by Native American tribes. Casinos bring in billions of dollars each year for the companies, investors, and state and local governments that operate them.

Casinos focus on customer service and provide perks that encourage gamblers to spend more money than they would otherwise. For example, many casinos provide free alcohol. Some also offer discounted travel packages, cheap buffets, and free show tickets. Casinos also offer high roller rooms that cater to gamblers who spend a lot of money. These rooms are often decorated with expensive artwork and have private lounges.

In the modern era, casino revenues are generated primarily through electronic slot machines and table games like blackjack, roulette, and craps. Other forms of entertainment can also be found at some casinos, but the vast majority is devoted to gambling.

Casinos can be large complexes with multiple floors and hundreds of slot machines, table games, and other entertainment options. They can also be smaller operations that are housed in a hotel, restaurant, or other building. In addition to traditional land-based casinos, there are now many online casinos. Some are even available on mobile phones and tablets. Some are free to play and others require a real-world deposit to begin playing.