No idea, I suppose they're all the same, but who knows!
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Huh, I just had a look at my cards again and noticed they don't have the 'Underworld Army'/... markings on them, but instead feature only the name of the card, in English, German, French, Spanish and Italian. They have the same design overall though, so they'll probably work for US games as well.
This post has been edited by auto system, Fri, March 23rd, 2012 at 21:01