Irresistible. There isn’t much other way to describe Popcap Games’ Plants vs. Zombies, an addictive and infinitely charming take on the tower defense genre. Instead of planes, tanks, mechs, or other miscellaneous items, the title demands that you defend a suburban home from a zombie invasion using the  flora that you plant in your lawn. Plants! If it all sounds a hair bizarre, it is, but in the absolutely best way possible. Fun and addictive, Plants vs. Zombies deserves a place in the collection of any armchair strategist.