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Xbox Stream Your Own Game Library Grows By Over 50 Titles

Xbox's Stream Your Own Game library gets a sizable update, with more than 50 new games added to the Microsoft cloud streaming service.
GamesRadar+

Valve remains undefeated: Microsoft will seemingly wear Steam like a jacket with new "aggregated gaming library" on Xbox PC app, and "this is just the beginning"

Handhelds The ROG Xbox Ally is cheaper than the Steam deck OLED in a last-minute deal, and I'm laughing at the timing Handhelds The Lenovo Legion Go 2 will allegedly turn into a big Steam Deck at CES, ...
GameSpot

Xbox PC App Is Aggregating Your Game Library From Other Stores

Xbox's June update is here, and a new feature for Insiders on the Xbox PC app allows them to have one "aggregated game library" through the Xbox app. What that means is that the Xbox PC app can now ...
TweakTown

Steam games come to Xbox PC app with new aggregated gaming library update

TL;DR: Microsoft's new Xbox PC app update introduces an aggregated gaming library, allowing users to launch and manage PC games from multiple storefronts like Steam and Battle.net in one place.