8 1024×1024.TGA textures for all buildings.
+7 1024×1024 .jpg Specular maps for advanced environment and
specular mapping visual effects.

Triangles count:
level1 – 39240
level2 – 27948
level3 – 12626

Check out the details from the Unity Asset Store: https://assetstore.unity.com/packages/3d/environments/urban/megacity-construction-kit-19469