So, I have a couple of questions.

First off, I can’t find anywhere that you define the differences between the city or town sizes. For example, what is the difference between a regional city, a major city, and a city break? Is that just by population, or are there other considerations as well?

Also, how do you define the climate types? E.g., what is the difference between subtropical and continental?

For all of my writing and development, I depend on the “Define on First Use” or DOFU rule. And I’m not seeing much DOFU here.

The UI seems very interesting, but some of the dots seem to disappear into the background at certain scales. You might want to consider adding a black border around the dots, or something to help them stand out more.