I loved it. I managed to get through all the levels in one sitting, most took only one attempt, but I can see it developing into much more complex levels etc. in the future, so for that reason I have rated it high. ^_^
Trying to get the badge of the day, but it gets so hard. Too much happening at once. I think I just fail at driving games, especially when zombies are added into the mix. I enjoyed it while I played it, but no way I can complete is easily, or any-time soon!
Great game once I got the hang of it.
I agree with most people in that a heal option would be nice to avoid the glitch in health on confronting the first battle on leaving a town.
Still give it 5 stars, spent a whole day playing it!
Enjoyable "ending" also.