Etrian Odyssey is a dungeon-crawling role-playing game series originally developed by Atlus. It is known for its first-person exploration, party customization, grid-based mapping, and challenging turn-based combat. The series features multiple entries and spin-offs, often with Japanese titles that include subtitles or numbering. The requested title, Sekaiju no Meikyuu II: Tsuu Shoou no Seihai, corresponds to the second main game in the series, commonly known in English as Etrian Odyssey II: Heroes of Lagaard.