Slots are among the most popular casino games which offer more payouts in comparison to the other casino games of roulette, blackjack, poker etc. A slot machine is often generally known as a fruit machine or a poker machine. Sometimes a slot machine can also be termed as a one-armed bandit. Charles Fey first invented the one-armed bandit in 1887 in San Francisco, United States of America. Initially he designed the machine with three spinning reels and five symbols comprising diamonds, look at here hearts, spades, horseshoes and 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 place of winning one more payout. Rather than the normal three spinning reels, an online video slot comprises five reels. Unlike the 3 reel versions, which offer only one payline, an online video slot can offer as many as nine paylines.