The Allure of Slots: A Thorough Investigation The first mechanical devices for slot machines were introduced in American saloons and gambling establishments in the late 19th century. Known as the "Liberty Bellen 365 slots," Charles Fey created the first slot machine in 1895. This machine had three rotating reels with the Liberty Bell, diamonds, and horseshoes as symbols. Pulling a lever on the machine allowed players to start playing, & winning combinations paid out in coins. This creation transformed gaming and set the stage for the growth of the gaming industry today. Over time, there was a significant evolution of slot machines.