Called Peacebloom Vs Ghouls, the new quest was inserted into the World of Warcraft: Cataclysm beta, and located in the Hillsbrad Foothills. As the screenshot depicts, the quest is a near-identical rendition of PopCap's game (although the quest only features six plants), and is believed to be officially sanctioned by the casual games publisher.
The new Peacebloom Vs Ghouls quest isn't the first collaboration between Blizzard and PopCap Games. Previous incarnations of Peggle and Bejeweled have also appeared in World of Warcraft, allowing gamers to play the casual titles without leaving the MMORPG.
To see the Plants Vs. Zombies-inspired quest, check out the video below!