Are there any Hogwarts RPG games that you can actually move about in?

Yes, I'm a nerd, don't judge lol :P anyways, I love Harry Potter and wanted to find an rpg about hogwarts but so far all I find is disappointment. They all suck and remind me of another game, called Eternal Night or something... I was hoping for something more... runescape or WOW like, you know, where I can move about as an actual character... and be my own person, not Harry or Draco or something... any rpgs like that for Hogwarts? :S