While imprisoned in Balduq, Adol is cursed and becomes a Monstrum. With his newfound powers, he must stop the Grimwald Nox from consuming the city in Ys IX: Monstrum Nox - Pact Edition from NIS America for the Nintendo Switch!

Ys IX: Monstrum Nox Pact Edition includes Ys IX: Monstrum Nox for PS4 and Nintendo Switch, Monstrum Memoirs Mini Art Book, Melodies of the Macabre (1-Disc OST Sampler) and a reverse coversheet!

Renowned adventurer Adol “the Red” Christin and his companion Dogi arrive at Balduq, a city annexed by the Romun Empire, only for Adol to be detained before setting foot inside.

While imprisoned, he meets a mysterious woman named Aprilis who turns him into a Monstrum, a being with supernatural Gifts and the power to exorcise monsters.

Now, Adol must ally with his fellow Monstrums to fend off the fearsome threats emerging from a shadowy dimension called the Grimwald Nox, as well as unravel the mysteries of the Monstrum curse, and the truth behind the unrest within Balduq...