Theorysonic Tournament 400 is a home video game console developed by Theorysonic. It is the first console in the Tournament series. It was Theorysonic's first entry into the home video game hardware business.


Theorysonic Tournament 200 was launched in 1974, in the Vlokozu Union with the price of $249.99. The console featured 2 built-in paddle controllers and a pong game.


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