Plants vs. Zombies is a tower defense video game involving homeowners who use a variety of different plants to prevent an army of zombies from entering their houses .
Plants vs. Zombies is a tower defense video game developed and originally published by PopCap Games for Microsoft Windows and OS X . The game involves homeowners who use a variety of different plants to prevent an army of zombies from entering their houses and `` eating their brains '' .
Plants vs. Zombies