Since official digital stores no longer stock the game, you can find a valid code through these channels:
: You can still buy digital codes from third-party retailers like G2Play , Gameseal , or CJS CD Keys . These keys are often redeemed through the EA App.
: Open the EA App, go to My Collection , click Redeem Code , and enter your serial number.
: Buying a used or "New Old Stock" physical copy on eBay is a reliable way to get a serial number. Look for copies that include the original manual, as the key is typically printed on the back.