The Malphigian Basin (🔊) is a fertile arc of land that surrounds the Malphigian Sea and the northwestern coasts of the Sea of Dreams. It's bordered on the north by the Aevinn and Shadow mountains, on the east by the Jarlschlager Range, and on the west by the Great Mountains.

The Kingdom of Evenhold is the largest nation in the basin, followed by Trillium, Rhyl, and the New Kingdom.

The basin has been inhabited for nearly two hundred centuries, with the earliest discovered artifacts dating to around 18,000 BA, shortly after the destruction of Tasavalta.