Fantasy Zone
From Sega Retro
Sharp MZ Version
screenshots
http://www.max.hi-ho.ne.jp/morymory/fantasyzone/
I am assuming that it's a legitmate, Sega-endorsed copy and not some hobbiest thing. Same with the Space Harrier port. I can't find evidence to support either theory, although the bloke responsible apparently made ports of quite a few arcade games to the computer -Black Squirrel 14:16, 30 August 2012 (CDT)