Premium Currencies(Gems) seems EXTREMELY rare, only real dependable source of getting them (as of level 18 rn) is completing levels. Daily Quest gives u like 20 gems only lel, other daily quests requires u to spent gem to get gem, at a nonprofitable rate. Animation and art is to my taste, just hope gem farming gets easier. I'm gonna give this game a try until I'm around level 30, and if the gem rates don't get better I might have to dip.