Ninja... they are an indispensable shadow for secretly retrieving information or defense. Moreover, the world of ninjas has in every epoch been divided in two forces. One is a wicked clan bent on ruling the world by means of dark power. The other is the good Oboro clan, restraining the evil clan and preserving the peace equilibrium.

Neo Zeed. Threatening the world in the past, it was thought that this gigantic crime organization been crushed completely at the hands of the exceptionally gifted Joe Musashi from the Oboro clan. However, "Masked Ninja" -  the leader of Neo Zeed - who had been defeated 2 years earlier, was only the puppet of the true leader "Shadow Master".

And so, with Shadow Master as it's origin, Neo Zeed was reborn, taking the new name "Neo Ghost", and restarting it's activities. And in order to get rid of the nuisance Joe Musashi, they started to extend their evil influence to Ninja Village.

This prototype is an extremely early version of the original version of Shinobi III (Super Shinobi II in Japan). It features 8 rounds, but the levels are just a mess, as the layouts haven't been completed yet and there are enemies and power-ups all over the place. None of the bosses work, as they cannot hurt you and will just rapidly go through their animations. There isn't much music in the game yet, and there are hardly any sound effects. The story is also slightly different, as the intro to this prototype reveals that Neo Zeed rename themselves Neo Ghost. Thanks to Anton Berglin for translating that. Anton mentioned that the "Ninja Village" text at the end "is not "the ninja village", or "the ninjas' home" even though that would seem more natural, it's written as if it's the name of something."

Here are some guides to all of the 8 rounds:

And here is some other stuff about this prototype: