You are downloading the DUET XAP file v18.104.22.168 for Windows Phone. DUET is a free and fun Action & Adventure game: This game rules are simple: control two vessels in sync, survive against all odds and keep calm. The perfect cooperation of hands and brain ... You can now download the offline XAP file to install & try it.
Download Locations for DUET 22.214.171.124 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 DUET XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.