The game seems to run very poorly and slow on mobile, especially when transitioning between menus or random crashes during a duel after activating a card effect. On top of the bugs there is also near predatory system for gems and pack system where rewards are front loaded for new players and then causing them to dry up emmensely forcing players to play for months just to build or finish that "other cool deck" they wanted to build, or instead paying ludicrous amounts of money just for 10 pull.