Pong

Game features two paddles and a ball, where players control their paddles to hit the ball back and forth. The goal is to score points by making the opponent miss the ball.
First to five points wins the game.

It is one of the earliest arcade video games, originally released in 1972 by Atari. It is a two-dimensional sports simulation that mimics table tennis.

Controls:

W, Up arrow: Move up

S, Down arrow: Move down 

Escape: Pause the game