As others have mentioned, acquiring to energy needed to progress in the game is painfully slow. If you are looking for a game that you can play for 5 or 10 minutes and then move on, or are willing to spend real money, you might like this game. It is very pretty and there are many things to do, but if you are not willing to spend much money, this game is slooooooow. Conceptually, this looks like a good game but in practice, it’s not well implemented. I’ve played a lot of these types of game and there are many out there that are much more fun and satisfying to play.
To the developers, you’ve got a nice start to a good product but the energy issue is a huge problem. Additionally, the perspective on the screen is off. It is very difficult to tell what you are tapping on and frequently clear a bush, tree, rock, etc. that you did not intend. Given that so much energy is required to clear anything, if you get the wrong thing, it is very annoying. I have noticed that if you work from the task listings (I.e, if you need to clear a tree, tap on the task requiring that and the appropriate tree is highlighted) the chance of hitting the wrong thing is mitigated but that added step just adds more frustration to the game, at least for me.