Featuring cards from lolis to demon girls. There is a lot of content such as Story-line, Dungeons, Daily rewards, boss attack, Event Boss (Cores - where friends team up to beat it up) and Abyass Score Board(Travel far as you can)
As for the Card system they have, it's very similar to Million arthur. Such as feeding devil cards to your main card, Party bonus and evolving. Though the one exception that is unique to this game is skill transferring. Where a player can transfer a rare skill to another devil for end game content.
They do have PVP which rewards players with goodies even if players don't win their games.
[size=14]If you would like to be my referrer here is My IGN: AsunaNyan[/h]
[You get chance to earn premium ticket to use in cash shop for a chance to earn rare cards when you referrer someone!]