Much-loved board games have a way of mutating over the years. New versions modernize and change with the times. Sometimes it's done to add challenge. If Hasbro didn't release new "Trivial Pursuit" question decks at the rate of, I don't know, nine per day, the game would have shriveled up and croaked decades ago. And just in case "Clue" players were getting tired of yet again deducing which of a small handful of characters killed Mr. Body, Parker Bros. has issued new versions from time to time that change the layout of the rooms and add new rules to the gameplay.