Huh! I'm almost positive Thunderforce came out for the MZ-1500, not the MZ-700. And I'm sure I've seen MZ-800 versions of Mappy and Rally-X. The MZ-700 isn't capabale of much more than extremely crude . I'd imagine whoever wrote that is rather confused, as the picture is of a MZ-80, not an MZ 700 or 800 (Although the 700 was backwards compatible with the 80).