(Please also see Christopher H.'s review which sums up this set better then my babbles)
LZW are providing customers with a respectable alternative to Fat Dragon's packs. LZW seem to be doing some fairly clever things with PDF layers by allowing the customer to choose different feature details. So make sure you have the latest version of Adobe Acrobat Reader before looking an LZW product. I reckon that this is one of those deceptive packs, i.e the cover displays a mere handful of walls and pillars, when you are in fact buying a complete modular building system for dungeon interiors and small stone buildings. Seriously inventive stuff!