The slot machine is known by various names all over the world. It is the poker machine in Australia and the fruit machine in U.K. It is also known as the one-armed bandit for its capability to leave the player penniless. Traditionally they are operated by coins with three or more coins. There is a currency detector, which validates the coins that have been inserted. There are more variations based on modern technology.

The essence of the slot game, be it the three reel machine or the one with five reels, is the random generator (RNG). This entity picks three numbers randomly and each one corresponds to a stop on the reel. In reality, spinning of the reel is only for the benefit of the casino gambling player. The RNG has selected the numbers long before. It is always working even when the slot machine is not in use and keeps yielding numbers in random succession at the rate of a thousand every second. This is the virtual reel technology. This means that you should not feel bad if someone hits a jackpot on the machine you were using. For, there is fat chance that you would have hit the lever at the exact millisecond as the other person.