If you haven’t yet experienced the joy of defending your home and your brains from ravening hordes of the living dead using only your gardening skills…good news! Both Plants vs. Zombies and Plants vs. Zombies HD are currently available free on the App Store!
A “castle defense” game with a twist, Plants vs. Zombies makes you use special plants to defend your suburban backyard from wave after wave of zombies: some shoot beans at the zombies, some outright crush them, and others generate sunshine to grow more plants. Meanwhile the zombies adapt with new powers, including armor (safety cones and football uniforms) and pole vaulters.
Plants vs. Zombies is a universal app for iPhone, iPod touch, and iPad and requires iOS 4.3. Plants vs. Zombies HD is an iPad-only app with better graphics for the larger screen, and requires iOS 3.2. No word on how long the apps will be available for free.