It might just be my obsessive nature, but...
I couldn't stop playing until I had retaken the entire city, cured Zombi-ism, drafted a constitution and taken out the evil graveyard.
I genuinely started caring for the little survivors. amd I didn't wan't to leave them without a surplus of food and happiness, and a proper government...
The animation could have been a little better though.
It would also be nice if you could solve conflicts among the survivors by being presented by more choices.