According to legend, the first slot machine was invented in 1894 in San Francisco. Pioneered by Charles Fey, his device, known as the Liberty Bell, features the familiar design that we've all come to know and love. The Liberty Bell included three spinning reels, a single pay line, and a fully automated payout system.
The first slot machine was invented in 1887 in California called one-armed bandit . A machine with 3 swivel wheels and 5 symbols: horseshoe, diamond, sword, heart and a Freedom bell.