Since I downloaded this app, I think it is very interesting and its good, but in an average level.
My critics are because of the lack of objects you start with, there are not too much. Also, you need to spend game coins to have it. I think the developers of this app should make an update that you can buy things and once you bought it, youll have infinite units. Just an idea.
Camila Fonseca about Blocksworld HD, v1.15.0