Slot machines are an integral part at casinos throughout the world and are for over a century. However, their origins can be traced back even further than that. First, a slot machine was developed in 1895 by Charles Fey and was called the Liberty Bell. It featured three spinning wheels that had five symbols on each that included hearts, diamonds spades, horseshoes and bells. For a chance to win the game, participants needed to match three of the symbols on reels.