1992: Internet Chess
In 1992, a pair of chess enthusiasts from the University of Utah created the first client-server program that allowed people to play chess over the internet. Over the next few years improvements were made to the graphics, rating system, and "lag" detection to make the game more enjoyable. Chess players around the world could now play against one another without having to visit a physical chess club! Since then, hundreds of chess sites have popped up to give players a place to play, learn, and share the game they love.