The game takes place in a house where a steady stream of zombies emerges from the east, increasing in speed and numbers overnight. Players must use a variety of plants with unique abilities to repel and eliminate the zombies before they reach the west side of the house.
The gameplay revolves around strategically placing the plants in a maze-like layout to maximize their effectiveness. There are many types of plants to use, each with its own strengths and weaknesses, requiring players to think critically about the best placement and combination of plants to defeat the zombies.
The game runs directly in the browser, eliminating the need for downloads or registration. With a lawn in perpetual danger, the goal is to outsmart the zombies and keep them from overrunning the house.