Only waste of time!!! Don't even try to play it!
All you do is to kill monsters . That 's it !
It's hard to level up and there's no quest before level 100!!!
To get to level 100 takes months and after that all you can do is killing more monsters.
You have to give at least 12 hours per day if you want to have good character and all for nothing.
Do not get close to this game! there are better things in life then playing Mu online.