Characters develop skills over time with experience and level up via questing rewards and can use and upgrade physical and magical weapons, and team up with other players to fight against monsters in instances, bosses on the open world as well as other players. Very often, people will sell their accounts which saves buying the items from the in game cash shop, farming experience and gaining the skills needed. This option is ideal after the removal of most PvE coin making methods due to PW now being focused on PvP paying players.