Both titles belong to the social card battle game genre and have been released in Japan earlier this year.
Regarding Ayakashi, Zynga Japan CEO Kenji Matsubara said last month already that he plans to roll out that game worldwide, too – even though it is very Japanese in a number of ways. Pocketgamer is reporting that Ayakashi in English will be out for both iOS and Android later this month.
In Japan, both Montopia and Ayakashi have not exactly been smash hits but done OK so far (especially on Android).
VentureBeat’s Dean Takahashi has learned that “Zynga is not trying to change them for the U.S. market”, which – especially in the case of Ayakashi – sounds pretty risky to me.