This isn't a game, this is an advertisement delivery vehicle. This vehicle is structured so that you can only engage for a limited amount of time per day without massively declining returns, but you also must engage everyday to maintain those returns or else your efforts are fruitless. You can also pay to improve, but the money required is asinine and it's death by a thousand "micro transactions" cuts that aren't micro. You should avoid this at all costs. I'd do zero stars if possible.