A well balanced and fun little game for short play (i.e. aiming to complete the ship as quickly as possible).
Not so well balanced for long play (i.e. aiming to maximise population) because of the slow rate of land area growth. If aiming to support long play maybe make tweaks such as resource and built tiles becoming blank instead of being deleted when the resource is depleted or the building destroyed, or making the tile spawn rate proportional to population.