In addition to adding disco zombies, Plants vs. Zombies Annual Edition adds 20 new achievements and a new "zombie avatar" mode. Players can create a zombie image in the game and use this image as Facebook , Twitter and Steam avatars.
Plants vs. Zombies (PVZ) is a puzzle strategy tower defense war game developed by PopCap Games for Windows, Mac OS X and iPhone OS systems. Players can switch different functions by arming multiple plants to quickly and effectively block zombies on the road of invasion. Different enemies and different ways of playing constitute five different game modes, and obstacles such as sunsets, dense fog, and swimming pools increase the game's challenge.