A call back to Sim City.
I game I greatly enjoyed back when I was a fresh faced fool.
Why just three stars then? Once you've build shops/housing/offices you can no longer tell what's what, there's no mouse-over or clicking on a building and see what it is or how much is initially cost.
Nor can you christen your city anything but "San Fransisco" - I did write in a name for my city, and it was utterly ignored and when my game started, I was still building bloody San Fransisco.
These are the little things that drags this from 4 stars to 3.
Otherwise the graphics are well suited for the game, the music gets a bit tiring, but you can turn it off, so that's a win.
With a little more work, this could be a solid Sim City clone, only free.