This could be a five star game.
Price is right, in app purchases are not unreasonable, sufficient challenge/fun balance.
Timer for energy is either broken or intentionally misleading. In either of those cases, with it being reported over 18 months ago, and still no change, I do not expect it to be fixed. With no support or content updates in that period of time, I will spend no money on this app.
This is very worth playing, as long as you are looking for a limited time distraction, not a long term, or deep, investment.
D3Pratt about Dungelot 2