Tengen is the name of the company that made and had its own branding on unofficial Nintendo entertainment games.
<h3>Tengen</h3>
It was incorporated on December 21, 1987. In 1988, Tengen emitted its first and only three games authorized by Nintendo: R.B.I. Baseball, Pac-Man, and Gauntlet. Meanwhile, Tengen privately worked to avoid Nintendo's lock-out chip called 10NES which granted it control over which games were published for the NES.
<h3>Nintendo Co., Ltd.</h3>
Nintendo Co., Ltd. is now the biggest video game business by revenue, as a Japanese multinational customer electronics corporation headquartered in Kyoto, Japan.
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