The map is not visible.

Before proceeding further, I'd like to hear your opinion on the overall concept. Otherwise, it might turn out that there's no need to continue) Perhaps I overdid it with the balance, considering the map has 13 cities.

The main thing is to ensure that the AI doesn't take too long to make its moves with such a large number of cities. And if it's a multiplayer map, make sure that the starting conditions are the same for all players. What else needs to be done?