Clacks A Discworld Board GameClacks: A Discworld Board Game is based on the "Clacks" semaphore messaging system the fastest (non magical) messaging system on the Discworld featured in Sir Terry Pratchett's novel Going Postal. Using a semaphore system of shuttered lamps on top of high towers, the Grand Trunk Semaphore Company has revolutionized long distance communications on the Discworld. Their network of towers covers most of the Unnamed Continent, but now the old postal