Ok, this is from 1992 and not 1993 but I didn't want to start a new topic.

http://img198.imageshack.us/img198/7876/egm0371992aug048.jpg

It shows ninja gaiden 4 for the genesis. The proto that is out there leaves out the 4 I think. This may be totally different from the proto that is out there as I remember it was a side scroling fighter and this looks like an action game.