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I know a lot of people are playing this game cuz the servers are always full when I logon. Call it a diablo-like no brainer, but there's gotta be something there for all these people to play it. I read an article in Gamespot and apparently the overall userbase of Mu is gigantic. Maybe the lack of advertisement on major gaming websites makes it harder for people to notice or make a decision on playing it or not, but I think that this game has the potential to hit it big in the US/European market just as it has in Asia.
Anyhoo...that's just my take on it. I used to play on the Korean server and if you think the Global beta version is weak, just wait till they update the game. That's it for now.