Microsoft's game streaming service Project xCloud will be free to Xbox Game Pass Ultimate subscribers.
The news comes from a lengthy blog post by Xbox boss Phil Spencer, who wrote that cloud streaming will be added to the higher-tier subscription service in supported countries this September.
Unlike the standard Game Pass, the Ultimate subscription includes Xbox Live membership, enabling users to play online against each other.
Project xCloud, which is still currently in preview, will give Ultimate subscribers access to over 100 Xbox Game Pass titles that can be played on phone and tablet.
Similar to Google's Stadia service, xCloud enables users to access and play their games from a range of devices, picking up where they left off if they switch from one to another.
The service was initially only available in the US, the UK and Korea, but has since been rolled out to other key markets, including Canada, India, Japan and Western Europe.
Microsoft recently announced a version of Project xCloud had been repurposed for developers so they can access their Xbox development kits remotely while in lockdown during the COVID-19 pandemic.