Etrian Odyssey IV: Legends of the Titan (Japanese: 世界樹の迷宮IV ファンタジアの黄昏 Sekaiju no Meikyū IV Fantajia no Tasogare) is a dungeon crawler role-playing game developed and published by Atlus for the Nintendo 3DS. It is the fourth installment in the Etrian Odyssey series and the first to be released for the 3DS. The game takes place in the kingdom of Tharsis and focuses on exploration and dungeon-crawling. Players take on the role of a guildmaster and explore the kingdom, completing quests, gathering resources, and fighting monsters. The game features an updated version of the series' trademark first-person dungeon exploration, as well as a new class system and a variety of new items, weapons, and armor. Players can customize their characters and create their own guilds, and can also take part in online multiplayer battles. With its deep and rewarding gameplay, Etrian Odyssey IV is a must-play for fans of the series and newcomers alike.