Unreal prototype is now officially more advanced than the old Unity version. I've added a texture importer that speeds up asset creation. Materials support a detail layer and tinting. Next thing to do is cutouts so that I can have doors and windows without adding variants for each texture. The wall material doesn't tile correctly, but that's an issue with the data and not the code. The range of view is limited and it shows, but that was the case in old crawlers as well and it can be mitigated.