MitchFrenzal wrote on 30.05.12 at 18:15:29:

There is two versions of Space Harrier one, One is released by Sega, The other by Elite, I don't know the difference though. Same thing happened with the C64 version. Something to do with licence tribbles, I guess. :)

I don't know about license troubles... I have a plastic cased 1986 SEGA / Elite release and a meduim Cardboard boxed version 1988/1990 Sega / Elite, there's a sticker which states 520STe or 1040 ST Only . Might hope it uses some STe features?