The Zombie Gravestone is an environment modifier in Plants vs. Zombies, exclusive to Versus Mode in the Xbox 360 and Nintendo DS versions of the game. The Gravestone acts as both a wall and a brain producer for the Zombie side. When made, a Gravestone will rise up from underground and will start producing Brains for the zombies at about the same rate a Sunflower, Sun-shroom, or Twin Sunflower produces sun. There is no Suburban Almanac entry for it and it will become unavailable to summon when Sudden Death starts.