Why are the empire buildings much more expensive on Helheim than they are in previous worlds? I buy 200 of each (10 at a time), gradually of course. I have 200 of everything prior to Helheim. I was wondering why it was taking me so long on Helheim until I did some quick math. I have only 130 of the Mansion (which generates 50 mill income), the cost for the next one is 280 billion. Back on Muspell, I have 200 Fire Fortresses (42 mill income) and the next one would "only" cost 168 billion. One thing I liked about this game is that the math was consistent throughout the levels so I didn't always have to break out the calculator to find the best deals. Not any more I guess What gives?