A casino is a gambling establishment offering games of chance and sometimes entertainment shows. They are found around the world and range in size from massive resorts to small card rooms. Almost all casinos have games of chance with some element of skill, and some allow players to use cards in place of dice or spin a roulette wheel. They are often located near or combined with hotels, restaurants and shopping areas. In some countries, casinos are regulated by law and can only operate with licensed dealers.

A successful casino can generate billions in profits for its owners, operators, investors and Native American tribes. In addition, state and local governments reap casino taxes and fees. But critics say that the social costs—including addiction treatment and lost productivity from compulsive gamblers—outweigh any economic benefits.

Casinos have a variety of security measures in place. These start with the employees on the floor, who are trained to spot blatant cheating or stealing. Casinos also employ a large number of surveillance cameras that can be adjusted to focus on specific patrons. These cameras are linked to a room full of monitors where security personnel can watch the action.

Many casinos also have special rules that encourage a spirit of cooperation. For example, dealers at table games work together to spot crooked dice or cards. They also share information on patrons who seem to be losing too much money. Something about the casino atmosphere seems to inspire cheating and theft, so casinos spend a great deal of time, effort and money on security.