BananaGrams! The Official Book : BANANAGRAMS! is the international phenomenon that started with a simple idea: "An anagram game that is so fast it will drive you bananas!" Doing for letters what Sudoku did for numbers, it's the obsessive new puzzle craze that starts with 144 letter tiles in a banana-shaped bag and captures all the fun of crosswords and word games like Scrabble and Boggle. Fun for all the family!