Deiranar is the land in which Realms of War takes place, based on the world of Erandior.

Deiranar's main feature is the great river that cuts the land in half, with in the Northern part the plains of Archeos and the Mountains of Aeregos, and in the Southern part the forests of Leongarde, Badlands of Firanos and Desert of Scaravus. More upstream is the cursed peninsula of Disgeran, dead in the middle of the land.