Knock Knock: Room Defense

Joy Nice Games

Contains adsIn-app purchases

About this game

[Special Rewards] 404 Draws, Character Skin, Random Orange Hero, and Limited Decor!

When your city becomes the hunting ground for ghosts and monsters... "Knock, knock." Someone's knocking on your door...

"Shh, don't make a sound, and don't open the door."

Creatures from age-old tales and urban legends are trying to break into your house. Your job? Close the door and defend it with your heroes as your heart pounds with excitement and no fear.

Schools, hospitals, hotels, streets, and office buildings—the most mundane locations become thrill-filled tower defense challenges. Get ready for stunning visuals and smooth controls in 5-minute matches!

[Five Main Features to Define New Horror Tower Defense]​

※ Choose your room, close the door, relax, and level up!
Ghosts are here and there's no escape? Well—kick back and relax!
Choose your room, close the door, and kick back to level up in dreams and summon heroes to build your defense line! It's up to you to defend the ghosts and monsters at night!

※ Strategize to turn the table in the mind game​​
No risking your life, but more than hide-and-seek! Everything from the beds, doors, to your heroes can be leveled up, because the whole room is your defense line. Build the right lineup and plan wisely for every challenge and event. Every win is guaranteed to be rewarding.

※ Immersive visual experience
Dive into the immersive eerie world with a distinct gothic chibi-style aesthetic. Is it blood or wine in the cup held by the vampire? Why is the killer with a chainsaw wearing a cute bunny mask? A hundred unique and stylized heroes and ghosts with cute horror elements.

※ Wide selections of avatars and instances
Turn into a ghost hunter and explore all kinds of haunted locations—from a train with lingering phantoms, a dormitory echoing with singing at midnight, to a mysterious underground cave. Now, pick your avatar from a wide collection and brace yourself for the ghost chase.

※ Fast and exciting tower defense battle
Grab your phone and start a 5-minute no-stress match anytime, anywhere! Quality tower defense fun made simple and fast.

Ratings and reviews

Needs work. its a Semi-Auto tower defense where all you do actively is upgrade stuff. im roughly an hour in and im already getting bored. There is rougelike features but only 1 damage upgrade and 1 trinket so its not really even rougelite. Gatcha elements for new/stronger characters. Normally i say games like these have potential but at least for the moment i think this game would need a complete mechanic overhaul and to be more active to be enjoyable. But theres no forced ads!!!

The game is fun and has potential. Been waiting for a defense game like this. However, there is an insane amount of clutter, way too much rewards to claim, everything looks unorganised. The game in general needs organising. So far I am earning so many different types of in game currency without knowing what they are used for. Heroes have different abilities but it is not clearly explained due to the insane amount going on in the game. There are stages where you progress but no real direction.

Game is locked for new players so rating is set with that in mind. Haven't been able to join the game due to development error - sadly as you can see by the "developer" response they don't seem to understand the error in mentioning in this review. Despite mentioning it's locking out players from joining - this is not anything to do with the ads but developer error code 403; rate_limit_exceeded 0/5 should be the rating