There are quite many versions of Metin 2, but not quite many hacks . I appreciate it though, if you want to have a look, here are some sites:
Original, korean Metin 2: ³»¾ÈÀÇ ¶Ç´Ù¸¥ ÆÄ±«º»´É ; - METIN2
American Metin 2: Metin2 - Free to Play
British Metin 2: Metin-2 - Oriental Action MMOG <-- if you look at the top of this site, you can see a whole lot of other languages of the games, but only those being published by Gameforge 4D.
However, I suggest you not to play the german Metin, 'cause the staff is bitching all around there, you often get banned if they just think you're suspicious, there are many flame wars, GMs/Admins get kicked for a hell lot of nothing, just to name a few.