Valve has updated its old Steam Family Sharing program and replaced it with Steam Families, a new and improved way to share games across multiple accounts that is available now.
Steam Families allows up to six users to essentially link their accounts into one, with each user gaining access to all of the games on each of the linked accounts. Whereas the old Steam Family Sharing system (first introduced in 2013) required the owner of a game to be offline in order for those sharing the account to play, that isn’t the case with Steam Families. Multiple users can access a family member’s game library and play different games at the same time.
Each user will have their own save files and Steam achievements. However, in order to play the same game together, multiple users on the Steam Family will need a copy. Once two copies of the same game are accessible via the shared accounts, any two members of the Steam Family will be able to play.
