Place defenses at the door → Upgrade turrets and traps → Collect coins to unlock new weapons → Hold off stronger zombie waves → Survive to the final wave.

Zombie Knocks Door 3D is a 3D tower-defense survival game in the same series as Haunted Dorm. Zombies relentlessly bang on your doors trying to break in. Place turrets, traps, and barricades from a 3D perspective to hold them off. Upgrade your defenses, unlock new weapons and skills, and outlast increasingly fierce zombie waves.