You are downloading the Hydro Thunder GO XAP file v220.127.116.11 for Windows Phone. Hydro Thunder GO is a free and fun Racing & Flying game: "This all-new addition to the legendary arcade hit series, Hydro Thunder GO for Windows Phone 7, features amazing dynamic water physics, ... You can now download the offline XAP file to install & try it.
Download Locations for Hydro Thunder GO 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 Hydro Thunder GO XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.