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}}The '''[[gametech:Magnavox Odyssey|Odyssey]]''' is the first home video game console, released in September of 1972 by Magnavox and was retailed for {{Inflation|USD|99.99|1972}} (though when purchased with a Magnavox television, it cost only {{Inflation|USD|50|1972}}). It was called the '''Brown Box''' during development. It ran on either 6 C-cell batteries or a 9-volt AC adapter. The Odyssey did not use a CPU; the cartridges, called "circuit cards", altered the machine's signal path instead. This changed the light output of the television screen, creating the appearance of a game, but it did not allow for music to be played.