nail'd offers you two basic choices of vehicles: four-wheelers and dirt bikes. Like most racing games, your ride can be customized to your liking, depending on whether you want better acceleration, handling, etc., and these options become more numerous as you unlock them. The basic challenge is to win a series of off-road races which are spread out across the locales of Greece, Yosemite National Park, Arizona and the Andes Mountains (about 16 unique tracks). Win the races, reap the glory. http://naildbiter.com/7oUJy