Slots are one of the most popular casino games that provide more payouts when compared with the other casino games of roulette, blackjack, poker etc. A slot machine is usually generally known as a fruit machine or perhaps a poker machine. Sometimes a slot machine is also termed as a one-armed bandit. Charles Fey first invented the one-armed bandit in 1887 in San Francisco, USA. Initially he designed the machine with three spinning reels and five symbols comprising diamonds, hearts, spades, horseshoes and also a liberty bell.

Later many improvements were made to Fey's machine. In 1996 the WMS Industries Inc developed the first video slot machine, which gave the facility of winning yet another payout. As opposed to the normal three spinning reels, an excellent online slot gambling video slot comprises five reels. Unlike the three reel versions, which offer only one payline, an online video slot can offer as many as nine paylines.