Walkers, Rotters, Undead - whatever you call them, zombies are certainly not cuddly pets. They are here to attack your defenses relentlessly and without hesitation, and if your base is too poorly constructed - to overwhelm you and nourish themselves with your brain. Build defensive barricades, buy guns and ammo, and set up turrets to stay alive for as long as you can. Play local and online co-op with up to four players and reach the top of the leaderboard.