Of course, it is the least I can offer as a techie enthusiast [I also use a Artix Linux tower 2014 build if you ever want to testing done on such a Linux context] (& I do like the MorseCodeGenerator thing much as well, haven’t used it abundantly yet but I did open and tested it running as expected.)
So first of all, the ZXTextGameCreator ZIP package seems to not display anything (checked into the Task Manager and it stays active for a few minutes at least but still doesn’t render any window to the desktop environment, so then I killed off the program and nothing new visually came by like error dialog or whatever)
Second, the sincity demo did not display anything but also has not even started any process either.
Third and last, the Windows-oriented TextGameCreationGameEditor has propped a single blank window before disappearing immediately afterwards and the process continuing ad eternam until I ended it minutes later.
Will insert error dialog onto a screenshot here from SFX when I catch it and when I used the installer the first time, the install wizard was in some eastern European language, most likely Polish for some reason.
So yeah, I guess that infodump is decent enough information as a starting point for your debugging. I am glad to be any useful to you and myself through this. (I also am about to develop/program from my own set of specifications a new “retro” computing architecture stack relatively soon which could be nice to target.) Farewell to a soon enough fix of yours hopefully!