Etrian Mystery Dungeon (Japanese: 新・世界樹の迷宮X, Shin Sekaiju no Meikyū X) is a dungeon crawler role-playing video game developed by Spike Chunsoft and published by Atlus for the Nintendo 3DS. It is a spin-off of the Etrian Odyssey series, combining elements from the Mystery Dungeon series. The game was released in Japan in March 2015, and was released in North America and Europe in April and May 2015, respectively. In Etrian Mystery Dungeon, the player takes on the role of a guild leader, who is tasked with exploring dungeons, fighting monsters, and collecting loot. The game features randomly generated dungeons, which the player must explore in order to progress. The player can recruit up to five adventurers, each with their own unique abilities and stats. The player must also manage their adventurers' stats, equipment, and items in order to survive the dungeons. The game features a turn-based battle system, in which the player must strategically move their adventurers around the battlefield and use their abilities to defeat enemies. The game also features a crafting system, in which the player can combine items to create new equipment and items. Additionally, the game features a multiplayer mode, in which the player can team up with up to three other players to explore dungeons and battle monsters. Overall, Etrian Mystery Dungeon is an engaging and challenging dungeon crawler, which combines elements from the Etrian Odyssey and Mystery Dungeon series. With randomly generated dungeons and an engaging battle system, the game offers hours of entertainment.