Arc System Works and Atlus announced the development of Etrian Mystery Dungeon, a crossover between the Etrian Odyssey series and Mystery Dungeon series.
Etrian Mystery Dungeon was released for the Nintendo 3DS in Japan.
The game was released in North America for the Nintendo 3DS by Atlus.
Etrian Mystery Dungeon was released in Europe for the Nintendo 3DS by Atlus and Deep Silver.