It's a great game. The idea of the worker layout: +1. Graphics fit the mood of the game: +0.5. Good music choice: +0.5. After some time, you pile on resources and people, having nothing to do: -1. Time well spent: +1. Good variety in people, options: +1.5, but a few flaws (1.5 -> 1).
A sequel or an update would be a great idea. It would improve the game's rating capacity.