If you never heard of Disgaea 4 before,it is a Strategy RPG. You have story, characters and all that RPG jazz, but the combat plays like chess. Well, over-the-top anime-flavored chess with huge numbers showing on your screen to represent damage and your stats to be more specific.
It is definitely a hardcore strategy RPG game in history, it initially launched on PS VITA several years ago, now it released on mobile, if you are a fan of classic strategy RPGs, you shouldn't miss this one.