The online slot machines that are popular nowadays among gamblers have a deep history. They were incepted in 1891 by the Brooklyn based Sittman and Pitt Company. However, it wasn’t until four years later that the gambling world was introduced to a mechanical slot machine, the Liberty Bell. Come 1964, and Bally Technologies developed the first electric slot machine. Yet, the history of slot machines was once re-written in 1975 with the advancement of microchip technology and the invention of video slots. Although this variant became extremely prevalent in land-based casinos, all changed with the arrival of virtual casinos.