The fourth Desktop App has been added to the store. This time it is the ubiquitous game Age Of Empires Online from Microsoft’s own Studios. Of course the App does not need any introduction to fans of the game, but for those of you who wants something new, the promise of the Windows App Store is now being realized, that is, easy discoverability of Desktop Apps. Now you don’t have to go start looking all over the internetz, but you simply go now to the app source to install. Go try it if you are interested.