The latest dev blog for Greak: Memories of Azur shares details on the creation of the Swamps of Bremul. You can check out a snippet of the blog below, but make sure to click over for the full piece.
Azur is the name of an unexplored cluster of Islands located in the northern hemisphere of the Alassya Planet. The lands of Azur have different regions with very diverse ecosystems. From mountains to tundra, Azur stands out for its vast natural resources. Within the different areas in Azur are the Swamps of Bremul which after being taken by the Urlags, are home to a large number of dangerous enemies.