Good morning, afternoon or evening. After a bunch of years, I remembered the name of this game, and along with that found some maps on YouTube I'd love to try out. Below is a list of all the ones I've found videos of, but no download links literally anywhere.
Those might be Beno's buildings. I have his old package archived on my site here:
https://www.skyscrapersim.net/downloads/custom/skyscrapersim%20buildings%20only.zipThat's the Beno Skyscrapersim buildings package. Try that and see if you can run those buildings.