Oh thanks for saying so!
I do feel like its biggest flaw is that it is too simple but I really wanted to see what people thought of this general concept at least. A bigger world with more things to do probably would be better. I would have to make some fixes to this to support something larger but that isn't so bad.
The truth is I'm not really sure yet how to design something larger yet in terms of an overall gameplay system. Maybe I could reintroduce some things from Idle Rock Remover as part of it.
I especially don't know what to do about the going forward and back. I feel like there is no adequate way to represent it on the map view and if I allow it the map will just end up looking like unreadable spaghetti.