You are downloading the Ultimate Challenge x XAP file v1.2.0.0 for Windows Phone. Ultimate Challenge x is a free Shooter Game: One of The Classic First Person Shooter5 levels and one secret level4 difficultiesAnd BossAfter beating boss, You can buy full version and upload save in cloud. You can now download the offline XAP package file to install & try it.
Download Locations for Ultimate Challenge x 1.2.0.0 XAP file
Package File
Please Click Here > to retrieve available package files for Ultimate Challenge x.
Please be aware that the Ultimate Challenge x XAP file you are to download is hosted on the Microsoft Store CDN server. You can read more about Ultimate Challenge x or get it on Microsoft Store.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Ultimate Challenge x XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.