I bought this and had no trouble at all with the download. My son and I have now built several buildings out of this set and it looks so cool. I've never built paper terrain before and I am just amazed at how awesome this kit is. You could easily build an entire table worth of terrain with a lot of variety with this one set.

Some of my favorite features are the modularity to mix and match different wall lengths and styles (angled or straight) to make anything from a 4x4 or 4x6 building all the way up to an 8x8 building.
I also love how you can make each piece unique by simply turning on or off different layers in the PDF (super easy to do in the free Adobe Acrobat Reader). You can add doors, windows, pipes, lights, signs, numbers and other details, but even cooler than that, you can change the entire color scheme of the set. The included colors are gray, white, light blue and dark blue. You can combine any of these colors as a primary and secondary color on almost any of the pieces. We've made so many buildings a lot of different color schemes.

Finally, I love the railings on the roofs that provide cover your figures in a firefight. We will be using this for Warhammer and as part of an arcology for Shadowrun as well.

I'm not sure I can really review this, as I wasn't able to download it. I came within 20 minutes (!) of downloading part one, when I was informed that the download couldn't be completed! Given the size of the two files, that's really disappointing, as I've had no trouble before. Looks good from the pics, and I hope no-one else has the same problem.