Metal Gear

I need to address some inaccuracies in your statement based on the search results provided.

Metal Gear was not the first stealth game. While Metal Gear (1987) became hugely influential and popularized stealth gameplay, it was not the genre's originator. The first stealth game was actually Castle Wolfenstein, released for the Apple II in 1981 by Muse, where players had to sneak around, wear disguises, and avoid detection while obtaining secret Nazi war plans. Even earlier stealth games existed, including the 1979 title Manbiki Shounen. Metal Gear was the first popular stealth game, particularly with its NES port, and Metal Gear Solid (1998) became the most influential title in establishing stealth as a major genre.

Regarding Hideo Kojima: The search results do not provide information about whether Metal Gear was his first designed game or confirm his role as designer of the original 1987 title. This claim cannot be verified from the available sources.