An absolutely absurd number of separate files, totally 114, that can only be downloaded 10 at a time.
But as if that wasn't bad enough, when downloading from the DriveThru RPG library, Selecting "Next ten files" to select the next set of ten in order; It will instead download the same files of your first set, despite having the checks of the next 10 selected.
The only workaround I found was to add EVERY SINGLE PDF file to Drop box, by clicking the "Send to dropbox" button, and hitting the approval prompt. For every. single. file. 114 files.
Once you've done that, only then can you batch download this product all at once.
The thing keeping me from using a 1 star is that I feel the author of this map and content are very dedicated, and dispite the above gripes, it is a quality map and sci fi content to build a station. The categorizing, of the mind-boggling number of map sections (The way the pdfs are named) is a bit esoteric and impenetrable, combined with the above complaint, my recommendation hovers on the negative.
I'd say avoid at all costs; unless you're willing to waste alot of time to even START your map. I only went through this rigamarole myself on principle of having spent the money already and the genuine quality of my previous purchases from Nienhaus.