Analysis of information sources in references of the Wikipedia article "Nintendo video game consoles" in English language version.
Nintendo entered the home market in Japan with the dramatic unveiling of Color TV-Game 6, which played six versions of light tennis. It was followed by a more powerful sequel, Color TV-Game 15. A million units of each were sold. The engineering team also came up with systems that played a more complex game, called "Blockbuster," as well as a racing game. Half a million units of these were sold.
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