Microsoft provides online gaming services through its Xbox Live platform.
In addition, you get to download online media like music and movies through Xbox Live.
Initially launched only for Xbox consoles, it now spans across Windows as well as the new mobile OS Windows Phone, thus unifying gaming experience on Microsoft platforms.
Xbox Live manages online content bought from Xbox Live Marketplace. The content spans across videos, movies, trailers, games, etc.
Xbox Live provides several features like
Windows 8 features a tight integration with Xbox Live service.
You can buy music, video and games from Xbox Live Marketplace directly, using the new Modern-styled apps bundles with Windows 8.
You buy music through the Music app, videos through Video app, and games through Xbox Live Games app.
This Modern-styled app provides the gaming services of Xbox Live.
You can view game trailers in the app. Also, you can buy a game directly through the app.
Besides that, you can customize your avatar and manage other account settings.
As an alternative, type “Xbox Live Games” on the Start Screen. The app will come up in the search result list. Clicking it will launch the app.
The welcome screen shows your avatar and profile details. If you scroll horizontally, you can further see games listed from Marketplace.