Mu online Go to Lv.4 Seed Sphere Guide Go to Game Setting Change Go to Character Renewal Guide Go to Fist Master Master Skill extention Go to Wide Screen Guide Go to Urk Mountain Guide Go to UI & Control Guide Go to Gremory Case Guide What is Battle Core? Go to see Tormented Square guide Go to see Chaos Castle (Battle) Guide Go to see upgraded Muun system MUUN SYSTEM