OK, so, fun game, my only issue that that damn purple crap floating around the bottom of the screen. It obscures everything, leacing me to random clicking in some levels because I couldn't see if there was anything to manipulate, and if there was, what the hell I was doing with it.
I got so used to right-clicking to buy new people that I got confused as to why I wasn't getting the later types. Then I realized that you have to buy a single one of each type(left-click) to unlock the new type. Maybe make note of that.
There needs to be a way to figure out which material comes from which ore, and percentages and all that. I'm stuck needing Royalite, but I don't know what ore will give me the best colecting to cave safety ratio.