The Barren Kingdoms
Wealdan is the name for both the continent upon which the campaign occurs and the world as a whole (as the residents of Wealdan aren’t aware of other continents, at least not with a strong enough understanding to need to distinguish them). It is roughly equivalent to medieval Europe in size and climate.
Wealdan is a massive continent that stretches from the planet’s north pole to a point near the equator; very few people have traveled so far south and so knowledge of the exact span of Wealdan was sparse even before the Great Dying. The continent is flanked by oceans both east and west.