Canyon is a trick-taking game in which players try to predict exactly how many tricks they will take. The number of cards in a hand increases and then decreases in size. A correct prediction gives your marker movement points around a scoring track depicted on a river in a canyon, whose main feature of interest is a section of 'rapids' near the finish line where your marker will be 'caught in the current' and sent back a few spaces if you go too many hands without a correct prediction. - BoardGameGeek