HBO Go is a free service provided with paid subscriptions to the cable network. It allows users to stream episodes of a series in their entirety remotely, and is available for phones and tablets. The service works by logging into the HBO site with credentials provided by the service provider of the area's cable and communications.
HBO Go has been tested in stages and its ongoing development includes plans for a stand-alone subscription version that isn't tied to a HBO cable subscription. Those people without cable can access the service online and choose from a library of over 1,400 shows, including award-winning series like the "Sopranos" and "Game of Thrones."