Casino (also known as a Gambling House) is an establishment for certain types of gambling. It is often combined with hotels, restaurants and retail shopping and may be themed. Casinos can also have a number of attractions that draw in gamblers, such as a stage show or lighted fountains. Most casinos offer games of chance to their patrons, and the vast majority of casino profits come from these games. These include slot machines, blackjack, baccarat and roulette. They may also feature card games such as keno and trente et quarante.

The most popular casino game in the world is the slot machine, which draws in more people than any other type of gambling device. It is simple to operate: The player puts money in a machine, pulls a handle or pushes a button and then watches a series of bands of colored shapes roll past on reels (or on video screens). If the right pattern appears, the player wins a predetermined amount of money. No skill or strategy can influence the outcome.

Most casinos offer free drinks and cigarettes to players while they gamble, as well as food and entertainment. These are called comps. Players who regularly place large bets are also rewarded with free rooms, tickets to shows and other amenities, depending on their level of play. Some casinos even give away free airplane tickets and limousine service to big bettors. These rewards are intended to attract the highest-wagering gamblers, whose business helps ensure that the casino makes a profit.