Ninja Gaiden, released in Japan as Ninja Ryūkenden (Japanese: 忍者龍剣伝, literally "Legend of the Ninja Dragon Sword") and as Shadow Warriors in Europe, is a side-scrolling action-platforming video game. It was developed and published by Tecmo for the Nintendo Entertainment System (NES); its development and release coincided with the beat 'em up arcade version of the same name. It was released in December 1988 (1988-12) in Japan, in March 1989 in North America, and in August 1991 (1991-08) in E...