Valerie Tripp 
Chances and Changes 
My Journey with Molly

What if you suddenly found yourself at summer camp with Molly at the end of World War Two? The two of you can go on an overnight nature hike, perform in the talent show, or compete in the swim meet. Your journey back in time can take whatever twists and turns you choose, as you select from a variety of exciting options in this multiple-ending story.