Up to 20 cars participate in a race in the PlayStation 3 and Xbox 360 releases, but only 12 cars participate in the PC release. The Challenge Series features three Race Wars events. The races in the Challenge Series are named after the districts they reside within; * Sutherden Bell Tower (Bronze) - Mitsubishi Eclipse GS-T * Library Square (Silver) - Mercedes-Benz SL65 AMG * Steyne Aqueduct (Gold) - Dodge Challenger Concept The Collector's Edition includes three additional Race Wars events within the Challenge Series;