You are downloading the KzBBS AppX file v18.104.22.168 for Windows Phone. KzBBS is a free and useful Social app: KzBBS is design for connecting to telnet BBS/Mud. You could have experience of classic BBS on your Windows 8.1 or Windows Phone 8.1.For now, ... You can now download the offline AppX file to install & try it.
Download Locations for KzBBS 22.214.171.124 AppX file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline KzBBS AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.