Starting off as an easy happy go lucky anime that follows most of those 'been there done that' troupes of the genre to a T with very little originality until you reach about episode 41 where this anime takes a suddenly yet refreshing dark turn into an oppressive race war which has got me hooked and kept me intrigue as to how it will be resolved. There's plenty of Ho-yay bait for the fujo/fudan fans and a variety of fan service as one would expect from the puzzle & dragon title. Moderate to decently animated fights scenes with RPG pacing, cute adorable monsters and yourstandard magical transformation scenes which are thankfully spaced out and speedy enough to keep the action going.
The animation quality can be hit or miss at points, the fight scene in episode two with Lance vs Crimson Dragon is even cringe worthy at parts as they try to replicate the mobile game into a world environment, this steadily gets better as the series progresses.

I'd recommend giving it a go, a very under rated series imo