The game has good graphics, a decent story, and some nice gameplay. Sadly, the upgrade system is heavily RNG based. However, Netmarble fails to communicate and, recently, had a game breaking bug that allowed everyone to double their power for free if they were on within 30min of a recent patch. Rather than admit to the fault, roll back data, or do any form of reasonable compensation for players, they are doing everything they can to silence the spreading of the info by deleting posts about it.