You can download the GOTY Edition through several major digital storefronts: Plants vs. Zombies GOTY Edition on Steam
Plants vs. Zombies (PvZ) Game of the Year (GOTY) Edition is the definitive version of PopCap’s 2009 tower defense classic. While the mobile version is available for free with ads, the PC GOTY Edition is typically a paid product. However, it has historically been offered for free through official promotions like EA’s "On the House". Official Purchase and Download Options Plants VS Zombies Free Download GOTY Edition