Since the game is over 20 years old, it is no longer sold on official digital storefronts like Steam or the EA App. To get a legitimate key today, your best options are: Pre-owned Marketplaces : Sites like
You likely will not find an official, unused key from EA. The servers that validated those keys were turned off a decade ago. Your solution lies in abandonware communities, no-CD cracks, and shared legacy keys. fifa 2004 pc cd key