This game is awesome! And best of all it's FREE! (for the most part). I have been playing it a far amount recently and its really fun. My sn is of course, "GodsMoon" so if you want to play you can add me to your friends list.
RuneScape - the massive online adventure game by Jagex Ltd
PS If you played runescape before you should try it agian b/c this past March they updated the game to version 2 which is suppose to be much better.