You can purchase a digital CD key from authorized retailers or marketplaces to activate the game on modern platforms: Direct purchase on the Steam Store .
Since Electronic Arts (EA) acquired PopCap, the registration system has migrated to the (formerly Origin) and Plants Vs Zombies Registration Key List
The Game of the Year (GOTY) Edition is frequently on sale for as little as $1.00–$5.00 on Steam or the EA App . You can purchase a digital CD key from