Knock Knock: Room Defense

Idle Horror Defense RPG

JOY MOBILE NETWORK PTE. LTD. · com.ygjszus.google

Not rated yet v1.10000.75 213.2 MB Android 5.0+ PEGI 12 · Low Maturity

Download APK 213.2 MB All versions

At a glance

Latest version: v1.10000.75 (2056249)
Updated: Sep 15, 2026 (23 days ago)
APK size: 213.2 MB
Requires: Android 5.0+ (API 21)
CPU support: ARM 32-bit, ARM 64-bit
Graphics: OpenGL ES 2.0+
Category: Casual (game)
Permissions: 28 (3 sensitive)
Website: privacy.joynetgame.com/privacy/en
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Knock Knock: Room Defense is a game by JOY MOBILE NETWORK PTE. LTD. in the Casual category. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

It asks for 28 permissions, 3 of them sensitive: read shared storage, display over other apps and modify shared storage. The game offers in-app purchases through Google Play and can read the advertising ID that ad and analytics services use.

Description

From the listing uploaded by “catappult”.

[Deluxe Preregistration Pack] Preregister to get 404 draws, character skin, random orange hero and limited decor now! 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.

Security & authenticity

Security rating: Trusted

Developer signature verified Sep 3, 2026
Signed byOU=cn
Signing certificate (SHA-1)15:CA:9B:7E:7A:D8:AC:20:C9:6F:5D:E3:A8:FF:30:68:9C:1F:70:49
File MD5ed0cc59a213befab1cfdcb49a6bcb297
Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (28)

Knock Knock: Room Defense requests 28 permissions, 3 of them sensitive.

Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Access (custom) com.asus.msa.SupplementaryDID.ACCESS
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Apphub bind apphub service (custom) com.applovin.array.apphub.permission.BIND_APPHUB_SERVICE
Billing (custom) com.appcoins.BILLING
Commondata get common data (custom) com.huawei.appmarket.service.commondata.permission.GET_COMMON_DATA
Control vibration android.permission.VIBRATE
Freemme msa (custom) freemme.permission.msa
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.ygjszus.google.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Push messaging (app-defined) com.ygjszus.google.permission.C2D_MESSAGE
Read privileged phone state android.permission.READ_PRIVILEGED_PHONE_STATE
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
Use biometric hardware android.permission.USE_BIOMETRIC
Use fingerprint hardware android.permission.USE_FINGERPRINT
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Landscape screen android.hardware.screen.landscape
Portrait screen android.hardware.screen.portrait