Another version was later made for Xbox Live on the Xbox 360, adding a multiplayer mode. Later, a port was made for the iPhone and iPad. The zombies won't go down easily, however, and are constantly thinking up new ways to breach your defences, including screen-door shields, pylon helmets, microphones, pushing stuff, laser skulls of doom, pole vaulting and zombonis that pave the way for an undead bobsledding team. However, you find a most unlikely but trusted ally in your own front lawn as you plant various organic defences against the undead legions, and are also given advice and supplies by your neighbor Crazy Dave. Zombies have risen from their graves, and seek to eat your brains. This game has a free version that you can play right on your browser here.
It's about plants fighting against a zombie invasion. Zombies is an incredibly addictive Tower Defense game from PopCap Games.