Hello , i can't find one game , as i remember it has "Mu" in its name , but only game i can find with Mu is Mu Online by Webzen.
That game is browser based flash (like RS) its shiny game too.The armors are huge , and you can go hunt dragons and stuff with party.
Please can someone help me find this game.

http://swut.net/euo/

probably isnt it, but maybe it just is.