It´s a completily new way of thinking Ragnarok online. All classes have new skills that are being balanced over the time, they have a team to test and execute the balance in need. They implemented a new item called gems similar to cards that drops from monsters, this gems can be insert in the gem slots that are available in the equipements. there is a market too, wherer you can put tour itens to sell without the need to bem logged in one char.