Risk has been published since 1957 and is one of the most commercially successful games ever produced. For the first time, there is an opportunity to learn about the 60 plus published versions of the game and the history Risk. It is an opportunity to examine many aspects of Risk that have been debated for decades by players around the world. Every one of the published versions of the game has been examined from Risk in North America to Risiko! in Italy; from War in Brazil to TEG in Argentina. These are the games that have been played by generations; fathers taught sons, brother played brother and each game has a story. From a mathematical examination of the map board to interviews with a national champion and several designers - this is a compendium of Risk.