I like the open-ended puzzle idea! But I kept getting random unbeatable levels with houses right up against each other. Could use a little more feedback when you're connecting roads correctly, like an icon on connected houses. 

I had the feeling something was supposed to be happening that didn't work. I connected every house to the post-office in the end but nothing happened. Gave me Carcassonne vibes 

very cool, I placed roads but nothing really ever happened. maybe I didn't get far enough or understand how to get the post office connected correctly. But I can see this being really good. I can see a $ resource for delivery and having a worker going back and forth per connected house. and then using that to buy more road or more postal workers. then maybe even further having different needs per house require different types of postal workers. great concept, love the design