The GOTY Edition includes all the original content plus several bonuses:
is the definitive PC version of PopCap's legendary 2009 tower defense classic. In this edition, you defend your home from a mob of 26 different fun-loving zombies using an arsenal of 49 zombie-zapping plants. Where to Download Plants vs. Zombies GOTY Edition Download PC Game
You can officially purchase and download the GOTY Edition from the following major digital storefronts: The GOTY Edition includes all the original content