GEORGE BACHAELOR LOOKS AT FREESCAPE, ONE OF THE FIRST FILLED-POLYGON 3D GAMING ENGINES.
Interesting 2019 article from Paleotronic. com:
https://paleotronic.com/2019/04/26/3d-adventures-with-freescape/
A very nice read, even though I didn't learn anything new.
Interestingly, ScummVM recently added support for some Freescape games, including amstrad versions :
https://wiki.scummvm.org/index.php?title=Driller
It's rather odd that an article on Freescape, that specifically takes the time to mention the Graphic Adventure Creator*, doesn't even mention the 3D Construction Kit!
(*and I do wish people wouldn't keep trotting out the "over 117 titles" created with the GAC line, which I think is down to an old erroneous Wikipedia entry. It's well over 300. There are 340 different titles listed on CASA.)