Raven is a hardcore action RPG from Korean developer Netmarble. It is very popular in Korea currently that immediately rushed into the top of KR Google Play and App Store list after released. Believe most of you guys also knew this game. Recently, Netmarble announced they will bring Raven to the west market in later 2015. But it still has a long time to wait. So, if you can't wait to play it, you can take a look at this Raven beginner guide.