Nukes already create fallout and deal a load of damage, isn't that enough?
You can refer to the github file in this link.
https://github.com/yairm210/Unciv/blob/master/android/assets/jsons/Civ%20V%20-%2..
You can refer to the github file in this link.
https://github.com/yairm210/Unciv/blob/master/android/assets/jsons/Civ%20V%20-%2..