Diary of a Wimpy Kid Mad Libs: World's Greatest Word Game is an activity book in the Mad Libs series, published by Penguin Young Readers Group in 2015. It is authored by Mad Libs and has 48 pages. The book is based on the Diary of a Wimpy Kid book series and is written in English. It is a humorous media tie-in activity book for children, with a trade paperback format measuring 5.2 inches in length, 8.4 inches in width, and 0.2 inches in height.