In the 1950s, when the first computers began to be made, three people had some ideas to create the basis of actual video games. In 1951, Ralph Baer, an American engineer of Loral Electronics, tried to create "the best television", proposing to add a gaming module, but his employer did not like his idea. Even if his idea was never realized, he is the first man to have thought of the idea of video games, later creating the first video game console, the Odyssey. Later, in 1952, A.S Douglas, of the Cambridge University in the UK, made a video game on a computer in order to illustrate one of his speeches. The game, called "OXO", was a tic-tac-toe game, with two players (the person itself and the opponent, the computer) .In 1953, Willy Higinbotham made a game called "Tennis For Two", similar to the later "Pong", to entertain visitors to Brookhaven National Laboratory. Another early video game is a version of checkers, but this is largely overlooked. 