The game itself is very well made, the endless waiting for energy can get annoying but that's a choice because you can also buy energy. What really puts me off is the endless loading and telling me it can't connect. Some periods it works well but I can't connect to the game for days now. It let me connect once yesterday evening but after closing the game I can't get in again. This especially happens when I'm in a 24 hour production. That's why I don't get more than 2 stars.