Knock Knock: Room Defense

Knock Knock: Room Defense is a fast-paced horror tower defense game where ghosts and monsters attack familiar locations such as schools, hospitals, hotels, trains, and offices. Choose a room, close the door, upgrade your defenses, summon heroes, and survive intense 5-minute matches.

Build strategic lineups using beds, doors, and unique heroes as part of your defense system. Explore haunted environments, collect avatars and character skins, encounter cute yet eerie gothic chibi designs, and battle creatures inspired by legends and urban myths. Enjoy special rewards, including 404 lucky draws, a random Orange Hero, and limited decorations.