There are basically three types of casino games which are usually played. These are electronic gaming machines, table games and random number games such as Keno. The machines include the earliest of the games, the slot machine and pachinko. The random number games include games such as Roulette and Bingo which uses the purchase of paper cards or tickets. The casino games provide long term revenue to the casino, also called the house and also offer a good short term payout. Some games in the casino may require skill, where the player has to make certain decisions which bring profit. This can come with long years of training and experience, even in the case of wheel clocking of roulette. Casinos cannot be a place of winning for everyone. If one person wins someone has to lose. These places are mostly secure. There is a physical security force for patrolling the casino floor and is there to check out the suspicious activities. Then there is a surveillance department which operates the casinos closed circuit television. This place requires security as there is a huge money involved on the whole. If you are handling so much money, you should also feel safe.