A casino is a building that offers various types of gambling. Some casinos offer live entertainment such as musical shows, and other attractions such as restaurants and shopping centers. Some even have hotel facilities. In the United States, casinos are regulated by state governments.
In the 1990s, many casinos began to use advanced technology for surveillance and game supervision. For example, betting chips with built-in microcircuitry enable casinos to oversee the exact amounts bet minute by minute and be warned of any anomaly; roulette wheels are electronically monitored regularly so that statistical deviations from expected results will quickly stand out.
Casinos employ a large number of people and provide jobs in the local area. However, in a rural area with a less skilled work force, the casinos may draw their labor from outside the local community, which leaves the unemployment rate for the original population essentially unchanged.
The modern casino is almost like an indoor amusement park for adults, with a large majority of the revenue generated from games of chance such as slot machines, blackjack, poker and craps. While other features such as lighted fountains, musical shows and elaborate themes attract visitors, casinos would not exist without games of chance. Moreover, casinos can make a great deal of money from comps, which are free items and services given to players who spend more than average. These include free drinks, limo service, hotel rooms and even airline tickets for big gamblers.