The granddaddy of all slot machines, the Liberty Bell, was founded in 1907 when Charles Fey partnered with Mills Novelty. It still had all of the lights and bells of its predecessors but it was much easier to transport and install than the heavy cast iron slot game machines of the past.
Not too long after, several improvements were made to the machines, including lighter materials that made them much easier to transport. Some of the other improvements were replacing the heavy iron with a wood cabinet making the process of transporting and delivering the slot machine game much easier still. Around the same time, some of the casino slot games started being redone with mini themes, such as patriotic, wildlife, etc.
Many of the changes that the slot machines went through, including the vibrant colors and themes were good, but the younger players were looking for something more challenging and skill based. So, for a short period of time the slot game waned in popularity, then the generational changes that seemed to boost the slots back into popularity occurred shortly after the depression. Some of the changes included video poker and video slot machines seen in the gambling hubs like Las Vegas and Atlantic City.
In 1964, the first electromechanical slot machine was introduced, replacing the internal springs and levers with electrical components, which led to the more exciting flashing lights and noises. Since then, continued improvements have been made to the casino slot machine. With the advent of internet casino websites, the online slot machines have become wildly popular. The slots offered something that no table game could offer, which was the possibility of winning a hundred times your investment.
Some people who have never been able to go to a traditional casino to see and hear the excitement are pleased to learn that the casino software providers are constantly improving upon the slot game. There have already been some variations of the online game but there are still changes in the works, such as replacing the term slot machine with Video Gaming Device or Electronic Gaming Device, and also includes developing a joystick that can be used to help out the realism online. The casinos also think the coin less slot is great idea, since they would need less people on their payroll.