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This Big Pack introduces 35 completely new tracks: 23 racing tracks and 12 skill game tracks. Five new tournaments include all the new tracks. For level designers the Big Pack provides more than 50 new crazy physics objects: car, rocket turbine, gravity field, wind, motor and many others! Three new fun achievements to unlock worth 50 extra gamerscore. Fasten your helmet and prepare for serious bruises! There are no refunds for this item. For more information, see www.xbox.com/live/accounts.