EA still sells Shift 2 Unleashed on its own platform. This is the safest method.
If you purchased the game digitally or have a physical copy, the location of your 20-character product key depends on the platform: Open your Steam Library, select the game, click the cogwheel icon , and then select Nfs Shift 2 Unleashed Activation Key
Since Shift 2 Unleashed is an older title, the original activation servers can sometimes be finicky. Here are the most common solutions for activation errors: EA still sells Shift 2 Unleashed on its own platform
Is there any legal/official way to obtain shift 2 unleashed? select the game