Zombie assaultone against all

About: Zombie assaultone against all

Defend the base by fighting off a large number of zombies. More zombies will come with each round.
Increase the weapon shop, because the zombies will become more and more. Buy a grid so that zombies are killed on it to save ammo.

To install the grid, first buy it in the store, and then just go to the inactive grid, it will be installed automatically.