WOW Power Leveling: This map has been introduced because of the 3rd Class Quest
Aida: The grassy lowlands of MU, it is like her sister map Noria but much bigger and beautiful, it is extensive and holds WOW Power Leveling strong monsters.
Cry wolf: The Cry wolf map can be entered through the Valley of Loren. It is an event map where characters must protect a statue while also fighting off powerful monsters, including the boss Balgass.
In private servers Cry wolf is one of those maps that are incredulous, and hard to go in most especially since it contains the strongest monsters in the game.
Kanturu/Kantur: A new map that comes with the season 2. It can be entered through Tarkan. As is Cry wolf, this map is only for events. It isn't available in Global Mu Online yet.
Balgass Barracks: New map that comes with the Season 3. It can be entered through Cry Wolf by talking to a NPC 'Werewolf Quarrel'. This map has been introduced because of the 3rd Class Quest.
Balgass Refuge: New Map that comes as well with the third Season. It can be entered through 'Balgass Barracks' by talking to a NPC 'Gate-Keeper'. There, you must face the ultimate challenge and complete the last phase of the Change Class Quest.