Two large dice are rolled. These create a high or low number, such as 36 or 63. Six other dice (2 large and 6 small) are rolled and chits are scored to the first person who makes the Low (36 in the example) or High score (63) using these dice. Advanced rules make the game slightly more difficult. Zippy is called if the score is not possible to make and proven.UK players will see this as a dice driven version of the numbers quiz from the TV show Countdown. - BoardGameGeek