Discover the game "Tennis for Two" 

"Tennis for Two" is a 2D tennis video game that was developed in 1958 by William Higinbotham. It was played on an oscilloscope, an electronic device that displays images on a cathode ray tube, and players used buttons to control the movement of the ball on the screen. 

The game was played by two people, each controlling a small line on the screen that represented a tennis racket. The objective was to hit the ball and send it over the net, scoring points by preventing the ball from passing the player.