Ninja Kid for NES was released on October 29, 1986 in the USA.
The original Japanese version is notably different from the American version. The main character is Kitaro, and his main weapon is his hair rather than darts. His sub-weapons are a flying finger instead of shuriken, his vest instead of the feather, and a geta instead of a boomerang. All of these weapons function the same as the ones of the protagonist of the American version, Kyo; they just use different sprites. The fireball sub-weapon remains the same. Certain levels are inhabited by 'western' film monsters like Frankenstein's Monster and Count Dracula; the boss of these levels is the character Buckbaird, the leader of the 'western youkai'. The scroll which unlocks the fortress is a crystal ball in the original version. The familiars are also different, being characters from the manga: the Pegasus was originally Nurikabe, the Eagle was Konaki Jiji, and the Mirror was Sunakake Babaa. Finally, a few of the minor enemies are different; most notably the 'Pirate Ninja' found in some of the Guerilla Warfare levels was originally Nezumi Otoko, and Kitaro rides on Ittan Momen during the Dog Fight levels.