You are downloading the FlappyKo AppX file v22.214.171.124 for Windows Phone. FlappyKo is a free and fun Racing & Flying game: FlappyKo is a game where your cow jumps through two rows of vaulting boxes, one hanging down from above and one on the floor, while collecting money. ... You can now download the offline AppX file to install & try it.
Download Locations for FlappyKo 126.96.36.199 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX 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 FlappyKo AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.