The game could genuinely, sincerely, and appropriately use a tutorial. Against that, it could also use a well-defined goal. For players like myself, you might also do better by zooming in a bit - or perhaps expanding the planet. My eyesight isn't the greatest, and the "fine tuning" on this game might be a bit much for a player whom is actually worse off than I am. Showing half the planet (or less) at one time, in greater detail would add to playability, I think. The music isn't unbearable, but gets somewhat stale.
You've got badges: This factor alone is worth sincere kudos.
I think that, were this game a bit more visually accesible, a bit more clearly stated (via tutorial), and had more clearly defined goals, it would rate higher, in my eye.
Keep in mind that I'm not writing this review as a troll. I'm being a sincere critic. If you want to discuss this more, please message me. If I didn't care, I wouldn't comment.