The beginnings of slot machines date back to the late 1800s, and it all started when the card Machine was invented by Sittman and Pitt in 1891. However, people also debated whether Liberty Bell was the first slot machine (https://calbizjournal.com/who-invented-the-slot-machine/) to be invented. Later on, many governments started banning slot machine and prohibited the use of mechanical slots. 60 years later marked the birth of electronic and later on, online slot games which have become widely popular and recongized.