A localization of the 1989 Family Computer title Ninja Cop Saizou by Kyugo, the crux of the story deals with the main character rescuing children kidnapped by a gang. One of the missing children is Taro, the young student of the main character's master. He will leave hints regarding hidden areas and how to deal with bosses.
As stages are cleared, you learn Ninja Arts, which must be charged up to use.
Something of note is that between the games, there were a noticeable number of differences.
Tropes found in the game:
- Boss Rush: Only in the original game. The localized title has you rematch one boss (which is chosen from one of four doors) before you deal with the final boss.
- Charge Attack: Holding down the B button charges up the POW meter, and when released an assigned Ninja Art is used. You get four arts you can use at a time: one by standing still, one when moving, one when crouching, and one when holding up and staying still.
- Drugs Are Bad: Sums up Black Manta in a nutshell, as the enemy forces are all drug pushers. Of course, the original game has something far different.
- Dummied Out: A lot of content was changed between releases.
- The first boss, Tiny, not only had a design change, but had a punch attack in the original.
- The artwork in-game was changed to be more realistic in the overseas release.
- The original game's second stage was removed, its boss (several ninja) being transplanted to replace stage three's missing boss (a floating eyeball).
- A boss that looked to be made of electricity was redesigned to be the overseas boss "Voo Doo Warrior".
- The music in the game was changed from the original to the international release.
- The main character's jumping sprites were also altered.
- The final boss had some alterations as well. In Ninja Cop, you had to first battle a ship dropping mooks, and then came the final boss, whom was an alien in disguise. In Black Manta, he was instead named El Toro, and you needed to use four specific Ninja Arts to defeat him without accidentally hitting his hostage, Taro.
- Ninja: It's in the title.
- Would Hurt a Child: The mooks in red that you can capture will admit the organization is flat-out turning children into more pushers.