Etrian Odyssey IV: Legends of the Titan, originally released as Sekaiju no Meikyū IV: Denshō no Kyojin (世界樹の迷宮IV 伝承の巨神), is a dungeon crawler role playing video game developed and published by Atlus for the Nintendo 3DS. It is the sequel to Etrian Odyssey III: The Drowned City and the first in the Etrian Odyssey series to be released on the 3DS.