Ninja-Kid

 is the first video game in the "Ninja-kun" series. It was released for arcades, on the Famicom, and MSX by Jaleco in 1984. The MSX version was the only version released outside of Japan, as it was released in Europe under the name "Ninja".
Gameplay.
"Ninja-kun's Demon Castle Adventure" features three upward scrolling levels that repeat and become more difficult. The objective is to defeat the enemies on each screen and advance to the next screen. The player can attack with shurikens and jump on enemies' heads to stun them. Occasionally, an orb will appear and if the player collects three, a bonus level will be unlocked.
Reception.
In Japan, "Game Machine" listed "Ninja-Kid" on their November 15, 1984 issue as being the second most-successful table arcade unit of the year.
"Ninja-Kid II".
Ninja-Kid II, known in Japan as and known in North America as Rad Action and JT-104, is a platform action video game first developed and published in 1987 by UPL in Japan. It is the direct sequel of "Ninja-Kid". "Game Machine" listed "Ninja-Kid II" on their June 1, 1987 issue as being the tenth most-successful table arcade unit of the year.
Legacy.
After Jaleco had ported the game and its sequel to the Famicom and MSX in Japan, the company created Ninja-kun's younger brother, "Ninja JaJaMaru-kun" and created their own series titled "Ninja JaJaMaru-kun". The "Ninja JaJaMaru-kun" series would feature several games released on various consoles and handhelds, many of the games are different genres like role-playing video game gameplay.