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Luigi's Diary is an item in 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 ground pounding the floor. After every chapter there will be a new entry in the diary, 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 will be music notes coming out of the brothers' room's floor. However, during the events of Chapter 3 when Mario obtains the Ground Pound, if the player goes all the way back from the Boo's Mansion to Toad Town and decides to enter the basement at this point before having finished Chapter 3, Luigi will still be in there and he will be stunned for a brief moment. He will flee and leave his diary behind. Luigi's Diary also makes small references to spinoff games from the Mario series, which includes Mario Golf, Mario Tennis, and Mario Party, and even a note of Luigi possibly getting his own game, which later on became Luigi's Mansion.