The generator is Geometry Nodes plus Python, with nothing platform-specific, but it was built and tested on Windows. The sign pictograms use the system symbol font, Segoe UI Symbol on Windows. On macOS or Linux, point the font in the .blend to Apple Symbols or Noto Sans Symbols 2 once, using File > External Data > Find Missing Files, or put a .ttf in a 'fonts' folder next to the scripts.

Yes. In the 3D View sidebar, open Night Towers > Load ad images. Use 9:16 images for portrait screens and 16:9 or 3:2 for landscape screens; they keep their proportions and never stretch. You can also plug your own collections into the modifier's Content inputs: Ads Portrait, Ads Landscape, and the HVAC, Service and Antenna kits.

On the towers, set LOD Distance to about 400 m and set LOD Camera to your camera. Distant buildings then drop their small parts. With these settings a full aerial of the demo city renders at 1080p on an 8 GB GPU. You can also lower the samples or render on the CPU.

There is no lettering anywhere: signs, neon, shops and screens use pictograms only, and no real brands appear. Your renders are yours to use, including commercially. The textures are CC0 and the scripts are GPL.

Blender 5.2 or newer. The generator was built and tested on Blender 5.2 LTS, and older versions are not supported.