Free-to-play Duel Masters tutorial game DueMa de Asobou (Duel Masters de Asobo) is now available via Nintendo eShop in Japan.
Duel Masters de Asobo first launched for iOS via the App Store and Android via Google Play in April. Here is an overview of the app, via its store pages:
An app that teaches you how to paly Duel Masters, even if you do not have any cards.
By learning the rules with familiar decks, you can learn how to play sufficiently even if you know nothing about Duel Masters.
Use the latest starter decks and other cards to play against Joe Kirifuda and Jendle. Clearing these challenges will grant you access to read the Duel Masters manga.