In the Kingmaker game i am running. My players have decided to make a dwarven kingdom. THey asked me if they could build their cities under the ground. I think the idead would be interesting. Are there any rules that would allow a city district to be built (under the ground), (floating in the air), (on the water).
Another question: my players have asked me to find rules or create house rules that would allow them to build...up... stacking one district antop of another, to make a city of towers. It is a neat idea.
So far i have not been able to find any rules for this. i would think that it would be the matter of increasing duration of preparing a city, and buildings. for example it takes 8 months i think to prepare a city in the mountines i think. So if the players want it to be under the ground would it be double the duration? Also BP's i would assume that if house rules were made up or found for any of this. Would it be a good idea to increase the BP cost of these buildings to build them?