Elemental Monster - Itsu Hashira Gami no Nazo (Japan), or エレメンタルモンスター五柱神の謎 in Japanese, is an action role-playing game developed by Konami for the Nintendo DS. Players assume the role of a young hero who must save the world from a mysterious evil force. The game features a unique card-based battle system where players can collect and customize their cards to create powerful decks. Players can also explore the game's world, which is made up of several different areas and dungeons. The game also features several different characters, each with their own abilities and stories. With its deep card-based battle system and engaging story, Elemental Monster - Itsu Hashira Gami no Nazo is a must-play for any fan of the Nintendo DS.