How does Steam family share work? Family Sharing allows family members to share games while keeping their accounts separate. Family and guests can play one another’s games while earning their own Steam achievements and saving their own game progress to the Steam Cloud. It works by granting family members access to games on a shared computer.
Is Steam family sharing illegal? Your Family Sharing privileges may be revoked and your account may also be VAC banned if a borrower cheats or commits fraud. In addition, not all VAC protected games are shareable. We recommend you only authorize familiar Steam Accounts and familiar computers you know to be secure.
Can Steam family share play at same time? Two people can’t play at the same moment on Steam Family Sharing. Family Sharing FAQ clearly states this: Can two users share a library and both play at the same time? No, a shared library may only be accessed by one user at a time.
Who is eligible for Family Sharing Steam? In order to be eligible, your friend must have been logged in to their Steam account on your computer at least once in the past, and have Steam Guard enabled on their account.