You are downloading the Gravity Line XAP file v22.214.171.124 for Windows Phone. Gravity Line is a free and fun Platformer game: GravityLine is designed for hardcore arcade fans. At first glance, it might seem easy, but don't be fooled. Avoiding the obstacles requires agility, ... You can now download the offline XAP file to install & try it.
Download Locations for Gravity Line 126.96.36.199 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Gravity Line XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.