Download the offline Knock-Knock XAP | APPX | APPXBUNDLE files for Windows 10 Mobile | Windows Phone . You can download FREE to install manually now. Windows Việt only share the original XAP | APPX | APPXBUNDLE installer for apps and games. All the Windows 10 Mobile | Windows Phone apps & games here are free for home or personal use ONLY. Knock-Knock is the property and trademark from the developer of it, all rights reserved. Please do not reupload to Microsoft Store.
