Etrian Odyssey 2 Untold: The Fafnir Knight is a dungeon-crawling RPG that blends classic exploration with a compelling narrative. Players delve into labyrinths, mapping their progress while battling fierce monsters. The story follows the Fafnir Knight, who can transform into a powerful beast, and Princess Arianna as they explore the Yggdrasil Labyrinth to fulfill an ancient ritual.