According to a few posts I have seen on some action replay forums, there are different versions of Animal Crossing. To tell the version, check the back of your game: *If your game says ADMEN1J13 at the back, your game is v1.1 . *If it says ADMEN0J20, your game is v1.0 *If your game is from Europe, your game is EURO . Don't try to use v1.0 codes on a v1.1 AC:WW, as they may not work. Are there any differences between them? It seems there must be if they use different AR codes. So why is only one rom version documented? And which one is it?