Download or read book Jumpman Rule #1 written by James Valentine and published by Simon and Schuster. This book was released on 2004 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the future, kids play with JumpMans, which take them back in time. But the people who manufacture JumpMans don't want kids going just anywhere. That's why it's a big deal when 51st-century Theo finds himself in bedroom of 21st-century Genevieve.