You are downloading the Knock-Knock XAP file v184.108.40.206 for Windows Phone. Knock-Knock is a paid and fun Role Playing game: An eerie, uncomfortable horror is creeping from PC over to Windows Phone! "It is a game as much about horror as it is of horror" ... You can now download the offline XAP file to install & try it.
Download Locations for Knock-Knock 220.127.116.11 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Knock-Knock XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.