In my excitement of this port, I I had scrolled right past the need for an XBOX controller...as we know the game was originally run (and I can still do so on the owned UW1 & UW2 legacy versions using DosBox) on keyboard and mouse. My fault. Spent an afternoon on trying to get it to work with mouse and keyboard and missed the simple note.
I've got both initial floppy version and GoG versions if there is a need to ensure the port works with both when/if keyboard and mouse are added. For now, both versions start up (just no legacy control).
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I've tried with the original game (I've had UW1 & UW2 since they came out) and bought the GoG version. I've tried to reinstall numerous times including deleting the AppData\LocalLow\Kweepa\UnityUnderground folder. The game and music come on but there is no mouse, keypad, or keyboard control (or recognition). The main UW options screen is there just repeating the great UW music.
It's also interesting that even with deleting the UUBuild and Kweepa\UnityUnderground folders, that very first login after I downloaded that requested location of UW folders does not come up. Any ideas? Is there configuration info hidden elsewhere that I should delete?