Index has another social game spinoff on top of Persona 3 Social, Persona 4: The Play, and Shin Megami Tensei: Devil Hunter Zero. Shin Megami Tensei: Devil Collection was just announced for Mobage and this title is based on the core Shin Megami Tensei series.
The story should sound familiar if you’re a fan of the series. Demons appear in modern day Tokyo and you have an application to summon demons. Like other Shin Megami Tensei titles you can fuse demons and there is an elemental skill system. Of course, demons are cards in Devil Collection.
Service for Shin Megami Tensei: Devil Collection will start in early August. If you register for the game early you’ll start with a SR rank Cerberus card.