Elden Ring Nightreign takes place in an alternative timeline of the Lands Between. After the Shattering, a cataclysmic event called the Primordial Night descended upon the Lands Between, plunging the realm into an eternal reign of night. Monstrous creatures from other realms now populate the land, with eight beings of tremendous power, known only as the Nightlords, ruling over an alternative version of the Limgrave region known as "Limveld", where the effects of said cataclysm shift the land to complete chaos. As a result, Marika's religion has been abandoned (except for a few churches still standing) and the people no longer pray to her or the Elden Ring. The Erdtree is absent from Limveld, its golden hue no longer visible. The Roundtable Hold, now dilapidated and in a state of disrepair, has become a safe haven for warriors dubbed "Nightfarers" who are summoned to end the eternal Night.
