The ISBN of Billy Phelan's Greatest Game is 0-670-16667-7.
The ISBN of Blockade Billy is 978-1587672286.
The ISBN of The Five Greatest Warriors is 9781405039338.
The ISBN of The Greatest Salesman in the World is 055327757X.
The ISBN of The World's Greatest Unsolved Crimes is 0600572315.
The ISBN of The Babylon Game is 0007112793.
The ISBN of The Vor Game is 9780671720148.
The ISBN of The Ancestor Game is 0140159878.
The ISBN of Berlin Game is 0091541905.
The ISBN of The Only Game in Town is 0830812024.
The ISBN of The Biggest Game in Town is 9780395339640.
The ISBN of Invitation to the Game is 0-00-639365-9.
The ISBN of The Angel's Game is 84-08-08118-0.