11. Simon
Simon Electronic Game came out in 1978, and immediately took off — kids loved it. Simon is a game that tests your memorizing skills. The devices create a series of tones and lights, and it requires a user to repeat the series. Each time the users are successful in the pattern, the game gets more difficult and if the user makes a mistake the game is over. Simon is a game that is still played today — with many updates that have been added since its release in 1978.