A casino is an establishment for certain types of gambling. These casinos may be standalone facilities or attached to hotels, restaurants, cruise ships, or other entertainment venues. They are regulated by government agencies to ensure fair play and compliance with local laws. In some countries, casinos are operated by private corporations, while in others they are owned and run by the state.

The games that are played in a casino can be divided into three general categories: gaming machines, table games, and random number games. Gaming machines are characterized by the use of reels or buttons to operate mechanical devices that simulate the outcome of various combinations of events. Table games are characterized by the presence of a dealer or croupier, who conducts the game and collects wagers. Random number games are based on the selection of random numbers by computerized equipment or by human croupiers.

The most popular casino games include slot machines, poker, craps, and blackjack. Most of these games offer a predictable long-term advantage to the house, but some have skill elements that can reduce this edge or even eliminate it altogether. Skillful players, known as advantage players, are able to beat the house at these games by making informed decisions and by learning basic strategy.