Think you've mastered the world of Undercover? Think again. This huge upgrade offers 60 new events, including two new game modes (highway wars and highway checkpoint) where you'll have the ability to earn up to three new cars as you race your way through hair-raising traffic. Best of all, this content is absolutely free! Find out more at needforspeed.com.

Blow away your competition with this explosive car pack, featuring eight unique boss cars available for use in any online race or offline career event. Race your way to the top of the leaderboards with each of these cars: Carmen's Shelby GT500, Chase’s BMW M6, Chau Wu’s Mercedes-Benz CLS 63 AMG, G-Mac’s Lamborghini Gallardo LP560-4 , Hector’s Nissan 370Z (Z34), Nickel’s Dodge Viper SRT10, Rose’s Porsche 911 GT2 and Zack’s Volkswagen Scirocco. Find out more at needforspeed.com. NOTE: The free Challenge Series Upgrade is required (separate download) in order for these cars to be used. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Take your experience to the next level with the Need for Speed Undercover Collector’s Edition. This digital upgrade includes five brand new cars available for use in career mode (2006 Koeniggsigg CCX, 2006 Dodge Challenger Concept, 2007 Porsche Cayman S, 2007 BMW Z4 M, 2007 Mercedes SL 65 AMG) plus twelve new circuit, sprint and checkpoint track configurations. Also included are specially tuned versions of ten existing cars which are available in quick race & online modes, plus 35 exclusive vinyls for adding a unique visual style to any of your cars. Visit needforspeed.com for screenshots and more details. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Get instant access to all aftermarket hood, spoiler and exhaust packages. Note: items in this package can be unlocked without purchase by progressing through Career. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Get instant access to all aftermarket wheel packages. Note: items in this package can be unlocked without purchase by progressing through Career. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Get instant access to all aftermarket paint & vinyl packages. Note: items in this package can be unlocked without purchase by progressing through Career. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Get instant access to all aftermarket body kit packages. Note: items in this package can be unlocked without purchase by progressing through Career. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Get instant access to all vinyls and visual upgrades with this bundle. This includes all body kits, hoods, spoilers, exhaust systems, wheels, paint & vinyls. Note: items in this package can be unlocked without purchase by progressing through Career. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Get immediate access to all Race engine, nitrous oxide, drivetrain & forced induction upgrades in the game. Stock your garage now for maximum performance! Note: items in this bundle can be unlocked without purchase by progressing through Career. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.

Don’t leave anything to chance. This ultimate performance bundle immediately unlocks ALL STREET, RACE & PRO performance packages in the game. After you get the parts, the rest is up to you! Note: all parts can be unlocked without purchase by progressing through Career. There are no refunds for this item. For more information, see www.xbox.com/live/accounts.