The player takes up the role of a defender in a desperate bid to fend off a relentless horde of zombies. The objective is to prevent the undead masses from infiltrating a heavily fortified tower by deploying defensive barricades and strategically placing walkers to take them out.
As the player navigates the virtual tower, the goal is to prolong its survival by utilizing available resources to hold off the ever-growing zombie horde. The game runs directly in the browser, requiring no download or registration.