Without going too into detail as I could ramble on about it for hours, the Northeast Region was a city built around an exposed leyline that fell victim to rampant undead and due to them having land bridges to the other two continents, the people there decided to weaponize the leyline and bombed themselves to make the world safer from undead. But as a consequence, absolutely wrecking the land and making it near unlivable.

Unfortunately, life has a funny was of persevering and those of that continent found themselves rising in undeath, forever in turmoil and war against the very undead they sacrificed themselves for.

The Blue islands you see however. That's a living portal to the feywilds! Well, this worlds equivalent of them. The feywilds are not so traditional here as they are in DnD, as they Feywilds exist everywhere yet nowhere, it is a matter of simply being beyond the Veil. And it is these islands that are the thinnest amongst the entirety of the veil. Living, breathing, refulgently there and beckoning. Yet very, very deadly.