Nothing special to do for Labor Day?
Give yourself and your friends a big laugh by playing the hottest video game...of the 1970s. Yes, they had such things back then.
The game was called Pong. It was kind of like tennis. A ball -- in this case, a little rectangle or square -- is hit back and forth by players operating paddles. People found it fun and challenging; maybe hand-eye coordination wasn't as advanced then as it is now.
Still not sure you want to do it? This video will give you an idea of what it looked like.