TRIP 1907: Interactive Escape The Book Game Game play: You will Need A copy of Trip 1907. A pencil. An Internet connected device. Step 1. Solve the riddle on the riddle page. Step 2. Log in and check your answer on line. Step 3. Collect Keywords & Missing Parts of the story. Step 4. Reach the end maintaining your sanity tokens. To solve the riddles you will need to read, think, draw, fold pages, search and combine elements from inside and outside of the book. While the story is a part of a game, only its keywords are needed in order to solve and reach the end of the book.