Xbox Insiders can now use cloud streaming on their consoles to play "select" owned games

Microsoft is expanding its suite of cloud gaming features by introducing the ability for Xbox Game Pass Ultimate subscribers to stream a "select" number of their owned games to Xbox Series X/S or Xbox One consoles, without needing to install them first. It's available to Xbox Insiders now, and will launch for all users at a later date.

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source https://www.eurogamer.net/xbox-insiders-can-now-play-select-games-they-own-on-their-console-using-cloud-streaming