Xbox One will allow you to start playing a game as you download the title digitally. This is according to confirmation on the matter from Microsoft, which was alluded to before during the console’s unveiling in May. Like PS4, Xbox One will allow users to play a certain portion once enough data is downloaded. The same applies to a game disc while the remainder is stored on the hard drive quietly in the background. All disc-based games on Xbox One must be installed to play, Via Polygon.