A book of 30 marble games that are played co-operatively. Each one is described in detail. Line drawings illustrate the text. If you have marbles in the house, you will want to learn how to play these games. And if you don't you'll want to get some after reading this book!There are 9 Circle Games, 10 Hole Games, and 11 Variety Games. All are played together, not against each other. Some can be played with as few as two people and others work well with a large group or in tournaments. - BoardGameGeek