3DS crossover game due out on March 5 in Japan.

Atlus and Spike Chunsoft are collaborating for an Etrian Odyssey and Mystery Dungeon crossover. Announced during its Niconico live stream this morning, Etrian Odyssey and the Mystery Dungeon is a top-down dungeon RPG due out for 3DS in Japan on March 5 for 6,980 yen.

The game is for “those of you who’ve played 1,000 times” and for “those of you who want to play 10,000 times,” according to the trailer.

Here’s a an overview of the staff:

Atlus (Production) Producer – Sigeo Komori

Director – Yukari Yokoro Spike Chunsoft (Development) Planning and Director – Seiichiro Nagahata

Character Design – Kaoru Hasegawa Etrian Odyssey Series Staff Music – Yuzo Koshiro

Class Design Drafter – Yuji Himukai

Monster Design – Shin Nagasawa

Art Superviser – Nizou Yamamoto

Watch the debut trailer below. Visit the teaser site here.