I downloaded it, did the tutorial missions, used the orbs they give you to unlock some characters (Olivia, Camilla, Azama), and did the three Prologue missions, and earned some in-game rewards to assist with levelling up etc. Seems to be a basic, but fairly fun take on Fire Emblem.
Difficult to tell how easy it's going to be to get orbs (you get one for completing a mission for the first time, and 2 per day for an unspecified amount of time), and you need 5 to unlock a character, though if you continue unlocking the required orbs drops by 1 each time. That limits you to choosing from the same set of 'stones' though (basically different coloured stones represent different parts of the weapon triangle).







