It’s no secret by now that Nintendo is going to be developing for smartphones, but what they have in mind besides Pokémon Go! has been a bit of a mystery.

Today, part of that mystery goes to rest – at least for Japan. A new free to play game, Pokémon Co-master, has been announced for iOS and Android.

The app is a digital board game developed by Heroz, a company that has a specialty of developing Artificial Intelligence.

The gameplay revolves around players collecting and battling digital figurines, a strange variation on the Pokémon franchise. The app launches this spring in Japan, but a western release has not been announced.

If you’re interested in checking out a teaser trailer in Japanese, you can do so below.

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