clack discworld board game base quotclacksquot semaphore messaging system mdash fast nonmagical messaging system discworld mdash feature sir terry pratchetts novel go postaluse semaphore system shuttered lamp high tower grand trunk semaphore company revolutionize longdistance communication discworld network tower cover unnamed continent old postal service fight drive determination newly quotvolunteeredquot post master moist von lipwig ankhmorpork post office challenge clack operator race ankhmorpork genuaplay friend claim title fast clack operator line play team win race discworld prove clack stay detail clack discworld board game contain rule player vs player game cooperative race game post office children introductory game

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