If you encounter any issues with the game not running or asking for a CD key, you might need to apply a crack. Search for a crack file specifically designed for NFS Underground 2 and follow the instructions.

Click on the link, and you will be redirected to a Google Drive page. You might see a warning message saying that the file is shared by a third-party source. Click on "Advanced" and then "Proceed" to access the link.

On the Google Drive page, click on the "Download" button. You will be asked to sign in with your Google account credentials. Enter your email and password to proceed.

After extraction, you will see a folder containing the game files. Look for the "setup.exe" file and run it.

Once you sign in, the download will start. You will receive a RAR file named "NFS Underground 2.rar" (or similar).

Once the installation is complete, you can launch the game and start playing.