Casino is a word used to describe a gambling establishment. It can refer to both land-based casinos and online ones. Casinos offer a wide range of games, from slot machines to table games like blackjack and poker. They also have restaurants, entertainment venues, and other amenities. In the United States, casinos are regulated by state and federal laws. Most allow people over 21 to gamble, although some allow 18-year-olds to play at certain tribal locations and bet on horse races.

The largest casino in the world is the MGM Grand in Las Vegas, followed by Caesars Palace and Bally’s. All three have more than 4,000 slot machines and 300 tables, plus hotel rooms and other facilities. Other large casinos include the WinStar in Oklahoma, which has a massive 6000-seat arena and a hotel with more than 500 rooms. The RiverWind Casino Resort in Oklahoma City is a much smaller operation, but still has more than 2800 slots and 45 gaming tables.

Large casinos are usually protected by a combination of physical security forces and specialized surveillance departments. In addition to patrolling the casino and responding to calls for assistance or definite criminal activity, these departments can also monitor video cameras and other security systems. This allows them to spot suspicious or erratic behavior by players and staff, helping to keep everyone safe. In addition, some casinos have support resources for problem gambling. These can be found through the National Council on Problem Gambling or by checking with your local government or state for more specialized help.