SEGA有授权出过MS和GG版，似乎还开发过MD版，不过好象没有发售，以下是WIKI原文，我英文不好请自行鉴定

Ninja Gaiden (Beta) (Mega Drive/Genesis)

A Mega Drive/Genesis game was in development sometime in 1992. It was a beat 'em up in the light of such games as Double Dragon, somewhat inspired by the original arcade game, but featuring different levels, a new storyline unrelated to previous games, and the presence of cut-scenes similar to the ones from NES trilogy and the other games developed by Sega. The plot, however, involved a trip of Ryu Hayabusa to the United States in a similar fashion to the one of the arcade, with some of the enemies from that game also returning, like the Jason Voorhees look-alikes. Some locations such as a casino, the character would encounter such things as drug deals.[4]

The game was never released commercially due to poor development and bad pre-release critics.[citation needed] A near finished version of the game was leaked illegally through emulation, having all the levels available for playing but also featuring programming bugs like odd moving controls and unfinished game sections.

显然是MS的