世界樹の迷宮
Etrian Odyssey is a 3D dungeon crawler role-playing video game by Atlus for the Nintendo DS. It centers around first-person exploration of a mysterious dungeon known as the Yggdrasil Labyrinth using a player-created party of characters. The game received mixed to positive reviews from critics, who criticized its punishing difficulty as limiting its appeal, but also making its gameplay more rewarding.