Decent graphics but repetitive grinding. Drop rate is absurd even when spending for gems, you'll literally feel like you just threw your money is the garbage. Algorithm is not favorable in any cases, super frustrating, rage quit is a great name for near impossible productive grinding when mobs get so hard while gear upgrade is non-existent. Best hope of accomplishing anything is joining a train, try to keep up and hope for the best in hours and hours of just following leader.