Here is the high poly version of my terraforming tower design which I have sculpted in 3d-Coat. The 3d-Coat original file has over 61 million polygons. For fbx, blend and obj I have reduced the poly count to 8 million and 5 million, still looks like the 61 million version but the lower poly count makes it easier to work with.
Here you can find the rigged and game ready version with pbr textures: https://www.cgtrader.com/3d-models/architectural-exterior/sci-fi-fantasy/terraforming-tower
- hipoly + lowpoly included