While I agree that multiple purchases of some of the previous sets makes them easier to use - I don't believe it was 100% necessary in order to be able to use the tiles to create a small consistent cave / dungeon / wilderness area.
I apologise in advance for ranting a little here (as I don't usually rant on the forums), but upon opening this set my initial impression was that this set is pretty much useless for creating towers when purchased on its own. The title of the set is 'Arcane Towers' after all, and I assumed (perhaps somewhat naively) that I would be able to build at least one tower from the set
Also (as has been noted above) it does state that the 'sample dungeons' were created using two sets - though I do believe that 3 sets would be needed to build the first dungeon pictured - as you only get one 'battlements corner' piece in each set (plus you don't notice on the picture, as it is in black & white, but that level would also be made up of different coloured tiles piled on top of each other to make the floor area - which is not a major problem, but enough to bug me - because I'm weird like that

).
So, all in all, I have to say that this is not a great set from my perspective, as I either have one set lying around that is near useless to me, or I have to go out and buy another set so that I can actually construct something that resembles a tower (which is not a major hassle - just a little annoying).
I would have preferred it if the set cost a little more and had more sheets in it, or if it would have concentrated on either regular walls or battlements - not half of each, just to avoid the whole disappointment, and the initial feeling of buying half a product when I opened the thing up.
Anyway, I would like to finish on a positive note and say that the artwork on the tiles themselves looks as good as ever
