Unolingo (pronounced you-know-lingo) has rapidly climbed the app charts for word games and puzzles with half a million downloads and counting; it is played by gamers in every U.S. state and over 100 countries around the world. Now available in print, we offer 100 Unolingo puzzles in a pocket-sized package. Every Unolingo is a 10 x 10 crossword with 26 empty squares that requires the precise placement of each letter in the alphabet; each letter is used only once. Depending on the level of difficulty, from one star (easiest) to four stars (most difficult), a Unolingo puzzle can be completed in 5 to 15 minutes and calls for a mix of word knowledge, logic, and deductive reasoning.