Why are both Mary-Kate and Ashley turning 16 at the very same time? Because they're twins! Join the popular duo for their official birthday party, which consists of many games among them, a driving test. There's also rock climbing, surfing, a fashion show, and plenty of other fun stuff to do. All of the points you score will go toward upgrading your car and getting other cool bonuses. There's so many great things to try out, you might just be playing this one until the Olsen twins turn 17.