Oh, they're quite different from one another. Mycena is heavy in resources and wooded. Those from Mycena are strong and hearty. They warship Dalna and rely heavily on hunting and farming. There isn't anything in the way of magic in the north.

Plenimar has strong sailing skills and are a hard sort of people. Their natural resources aren't as abundant as the other two countries, and they have a strong belief in necromancy.

One could say that Skala is the most advanced of the three lands. This is where the wizards make their home and the city built for its protection is strong and perfectly calculated to be defensible. They've kept in close contact with Mycena and trade heavily with them. Many of the products found in Skala can be traced back to trade with Mycena.