The Challenge series for Need for Speed Undercover contains 60 events that are split up between the two new game modes and offer the possibility to unlock three new cars: the Battle Machine Mazda RC-7 (after 30 events), the Speed Machine Porsche 911 GT2 (60 events) and the Dominator Corvette Z06 (31 events have to be dominated).

In the Highway Wars mode the players are racing three opponents at high speed. The second mode is a checkpoint race and you have to pass the track sections before time is up. When unlocked, the three new cars can be used in the career and the online mode.

You can download the Need for Speed Challenge Pack for the PC from the official NfS website. PC games Hardware users can also use the local download to get the patch for the French, Italian and German version of the game.

Besides the Challenge Pack players can acquire additional content in the EA Store that has been available to the consoles for some time already. With the Boss Car Pack you get access to the boss cars of Need for Speed Undercover. Those cars are:

• 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
• Nickel's Dodge Viper SRT10
• Rose's Porsche 911 GT2
• Zack's Volkswagen Scirocco

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