I liked the concept, as a sort of tower defence game. The variety in the stuff you could put down was cool, and I liked the limited number of each thing as well. Some of the items weren't super intuitive to understand though (e.g. the spike barricade didn't seem to damage the zombies, just block them off), and having to click an arrow to get to new ones was a bit tedious, especially with the real time element.
I felt like I often didn't have enough time to properly defend, but that's me in all tower defence games. Like someone noted below, I sometimes had trouble placing the things where I wanted them, but if I stayed far enough away from the house it worked fine, so maybe that was deliberate? I also would have liked a bit clearer indication of ground covered (e.g. I sometimes thought I'd blocked a part, but then the zombies would just wander through a gap I couldn't see).