Herzog Zwei was released for the Sega Genesis back in 1990 by Techno Soft.  It was not heavily heralded as a marquee title but quickly found a place in the hearts of many Sega strategy fans.  With it's very fast paced action and incredible strategic depth it is a wonder that this game did not catch on.  It was probably hurt by some rather ignorant reviews by several magazines, including EGM which gave it a 3 overall (out of 10).  This game also made a name for itself among it's fans as being one of the first RTS games, and in many opinions remains the watermark in this over crowded genre.   One other Herzog game exists, it was released for the MSX computer system which was popular in Japan and Europe.  It never made a North American appearance.