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Luigi's Diary is an item in the Mario Series game Paper Mario. This diary of Luigi's can be accessed after Mario gets the Ground Pound in Chapter three. It is possible for Mario to get in there from Mario and Luigi's room by gound pounding the floor. After every chapter there well now be a new entry in it the book, that can be quite humorous to read. Before Chapter Three Mario can't access Luigi's Diary, but he can tell that Luigi is writing in it, because there well be music notes coming out of the brothers room's floor. Luigi's Diary also mentions various games from the Mario series, which ncludes Mario Party, Mario Kart, Mario Golf, and even a hope of Luigi to get his own game, which later on, became Luigi's Mansion.