You are downloading the Fall Out Bird XAP file v220.127.116.11 for Windows Phone. Fall Out Bird is a free and fun Action & Adventure game: The hit game from Fall Out Boy, now on Windows Phone! As written about in IGN, GameSpot, Rolling Stone, CNET and more! Rome wasn't built ... You can now download the offline XAP file to install & try it.
Download Locations for Fall Out Bird 18.104.22.168 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 Fall Out Bird XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.