Xbox Live is one of the services that more love has received from Microsoft for a long time. Achievements, leaderboards, and cloud game save create a great player experience. Some features that were thought to be included for Windows Phone and PC, but that ultimately are not.
And it is that the games that one could have on a Windows Phone, as can happen with Angry Birds Star Wars 2, are not transferred to the cloud, and if you were in the case that you want to do a factory reset to the phone, you would lose them totally. This means that all those hours of play would be forgotten with the great disappointment that this supposes.
It is Microsoft itself that treats Xbox 360 and Xbox One console video games differently from those that can be installed on the PC or phone. And this happens, even if the game you install has the Xbox Live Windows seal. So console video games they have all full access To the characteristics of Xbox Live, the functionality of this service is limited on the PC and Windows Phone for video games published directly from Microsoft.
A video game like Age of Empires: Castle Siege, which is published by Microsoft itself, has all the functionality of Xbox LiveWhile Angry Birds Star Wars 2 published by Rovio, no.
They are the developers of those games themselves those who have to provide the servers to be able to provide the saving of the games. The problem also comes for the user who cannot make a copy of the game locally, which would allow him to transfer it back to another Windows Phone device, so he is shorted without any possibility.
For what remains in the user searching for information in an unpublished video game by Microsoft to see if you have the option to save to the cloud, otherwise all those months can be lost to nothing.