Nice game with nice graphics. But I can't say I liked the music.
Gameplay is addicting and easy, but never boring. I see some interesting ideas there too.
I like to see other citizens in the game. It makes me feel like the world is alive and I'm not alone.
Also I like the art and the soundtrack. But I'd like to have an inventory, because it's boring to run back and forth to collect all the keys and bring them to the doors.