A casino is a gambling establishment where people play games of chance for money or other prizes. The casinos are usually associated with glitz and glamour, but they also have a dark side. Many people become addicted to gambling and lose their jobs, families, homes, or self-respect. Others have mental illnesses that are aggravated by the excitement of the gambling environment. In addition, the casinos are often accused of shifting local entertainment spending away from other businesses and generating negative economic effects in the communities where they are located.

In addition to the games of chance, most casinos offer a variety of other entertainment options such as shows and restaurants. This is to attract more customers and increase the revenue for the casinos. Moreover, some casinos provide complimentary items to gamblers. This is called comping.

Most casino games have built-in advantages for the house, which ensures its profitability. These advantages are referred to as the house edge. Some of these advantages are obvious, such as the fact that the house always has an advantage in a game of poker, while others are less so. For example, the odds of a slot machine paying out a winning combination are predetermined by computer chips within the machines. In some cases, these chips are manipulated in collusion with other employees or by independent cheats to produce an unfair advantage for the casino. To combat this, casinos employ a number of security measures.