After a tenuous peace between the four races of Broccion, the world is at war again, seeking leadership. Players take up arms for their guild and for their nation to battle for land, resources, and victory. Choose from four races (Human, Shadow, Seroine, and Vaneese Human) and seven classes (Mystic, Bow Mistress, Blader, Paladin, Rogue, Sorceress, and Gunner), then gain experience to grow into an advanced class, and Fletta to improve your abilities.
Players fight their way through quests, guild clashes, large-scale PvP action and castle sieges to bring peace to the fantasy world of Asmara. Players can choose from four races (Human, Vaneese Human, Seroine and Shadow) and seven classes (Bow, Mystic, Mistress, Paladin, Blader, Rogue, Gunner, and Sorceress). In addition to the traditional experience-point-based leveling system, Karos Returns features the Fletta system that can be used to increase stats, give buffs, buy resources and enchant items. Furthermore, open world PvP adds a morality system to the game, providing an even deeper level of customization for online gamers.