Great Scott Biff stole the DeLorean, and went on a joy ride through time! Now it's up to Doc and Marty to repair the space-time continuum! In this cooperative dice game, players travel through four time periods from the Back to the Future trilogy, completing important Events to retrieve lost Items and returning them to their proper time and place. Each round, the Paradox Tracker advances based on the number of incomplete Events. If the time travelers successfully return all lost Items before the Paradox Tracker reaches "game over", they save the space-time continuum and win!