Shin Megami Tensei: Devil Collection

Devil Collection is a social card-battling game released through the Mobage service. Like other social games on the service, it is based on a free-to-play model.

The story centers around players defending modern day Tokyo from a demonic invasion as a demon summoner with access to demon summoning and fusion through a cellphone application. By gathering demon companions and fusing them with customized skillsets, players are able to organize them into decks.