Knock Knock: Room Defense

JOY MOBILE NETWORK PTE. LTD. · Games

4.7 287 ratings Free

Independent analytics for this App Store listing. AppTracker is not affiliated with JOY MOBILE NETWORK PTE. LTD.

Chart standing · US

Not currently charting in this storefront.

What changed · US

Listing changes AppTracker has observed for this app in this storefront — new versions, price moves, rating shifts, and store copy.

Oct 8, 2026
Rating ★ 4.76 → 4.75
Oct 1, 2026
Rating ★ 4.75 → 4.76
Sep 27, 2026
Rating ★ 4.74 → 4.75
Sep 25, 2026
Rating ★ 4.73 → 4.74
Sep 22, 2026
Rating ★ 4.72 → 4.73
Sep 20, 2026
Rating ★ 4.71 → 4.72
Sep 18, 2026
Rating ★ 4.7 → 4.71
Sep 16, 2026
Rating ★ 4.71 → 4.7
Sep 15, 2026
Rating ★ 4.7 → 4.71
Sep 14, 2026
Rating ★ 4.71 → 4.7
Sep 14, 2026
New version 10000.0.66 → 10000.0.70

1. Version content upgrade and optimization 2. Known issues fixed

Sep 13, 2026
Rating ★ 4.71 → 4.7
Sep 13, 2026
Rating ★ 4.7 → 4.71
Sep 12, 2026
Rating ★ 4.7 → 4.71
Sep 11, 2026
Rating ★ 4.69 → 4.7
Sep 10, 2026
Rating ★ 4.72 → 4.69
Sep 9, 2026
Rating ★ 4.71 → 4.72
Sep 8, 2026
Rating ★ 4.69 → 4.71
Sep 7, 2026
Rating ★ 4.66 → 4.69
Sep 6, 2026
Rating ★ 4.68 → 4.66
Sep 5, 2026
Rating ★ 5 → 4.68
Sep 4, 2026
Rating ★ 0 → 5
Aug 31, 2026
New version 10000.0.62 → 10000.0.66
Aug 27, 2026
New version 10000.0.56 → 10000.0.62
Aug 26, 2026
New version 10000.0.44 → 10000.0.56

Price & rating history · US

Reconstructed from the listing changes AppTracker has observed in this storefront. A field is charted once it has changed more than once, and each line starts at the value it moved from.

Average rating history over the observed period. 0 2 4 Sep 2 Sep 13 Sep 23 Oct 4 Oct 15

Average rating · ★ 4.75 now · 21 changes on record

Ratings breakdown · US

The star breakdown behind this app's rating in this storefront.

5★ 92% 264
4★ 1% 4
3★ 1% 3
2★ 1% 2
1★ 5% 14

In-app purchases · US

What this app sells inside itself, grouped by kind and priced for this storefront.

One-time purchases
0.29 Pack $0.29
0.49 Pack $0.49
1.99 Pack $1.99
2.99 Pack $2.99
3.99 Pack $3.99
7.99 Pack $7.99
14.99 Pack $14.99
25.99 Pack $25.99
29.99 Pack $29.99
299.99 Pack $299.99

Screenshots

Similar apps

Competitors and close alternatives, as estimated by AppTracker.

About

[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.

What's new · 10000.0.70

1. Version content upgrade and optimization 2. Known issues fixed

Details

ReleasedAug 2026
UpdatedAug 2026
Version10000.0.70
Size555.9 MB
RequiresiOS 15 or later
Age rating12+
LanguagesArabic, Chinese, English, French, German, Indonesian, Italian, Japanese, Korean, Malay, Polish, Portuguese, Russian, Spanish, Thai, Turkish, Vietnamese
PriceFree
Categories GamesRoleplayingStrategy
Bundle IDcom.us.ygjsz.ios