Actual gambling machines have been around for over 115 years and have been popular ever since they were first invented. The first gambling machine was developed by Sittman and Pitt in 1891 in the Amercian city of Brooklyn. The symbols they used were playing card faces and payouts were based on poker hands. The 50 symbols were on 5 drums which would spin when a player placed a nickel in the machine and pulled the lever. The first machines did not pay out cash, instead the prizes would be goods from the bar that the machine was located and were based on how good the poker hand was.
Now we can see slot machines everywhere. One good site I can recommend where you can play slots is on Sloterix dot com. Visit there yourself and start having your own slot machine.