windowscentral[.]com/gaming/pc-gaming/steam-families-is-out-of-beta-testing-letting-a-household-share-games
Steam Families is out of beta testing, with Valve originally announcing the feature a few months ago and gathering feedback from testers. Steam Families allows players to create their own digital family of up to six Steam users, pooling everyone's libraries of games together.As an example of how it all works, if two players in a Steam Family own a copy of Saber Interactive and Focus Entertainment's Warhammer 40,000: Space Marine 2, then any two players in the family can play that game at the same time, but the other members of the family will have to wait until they stop playing. If another member of the family buys a copy, then up to three players can play it at the same time, and so on.