Jacks - Klutz Book Of... Author:Editors Of Klutz The Klutz Book of Jacks is a collection of twenty of the most time-honored, quality jacks games played. Rules for Pigs in the Pen, Scatter, Slugsnail, and more are all here. Comes with a set of 15 metal jacks, a Klutz-custom high-bounce rubber ball, and a drawstring fabric pouch. Hours of bouncy fun for kids ages 6 and up!