[2021] — Greenluma

: Play games from a shared library even when the owner is currently using their account, a limitation typically enforced by Steam.

: While many users claim to use "Stealth Mode" to avoid detection, there is a persistent risk of a permanent Steam account ban.

: Certain games with aggressive anti-cheat systems (like Easy Anti-Cheat or BattlEye) can detect the modified Steam files, leading to immediate game bans.

: It can bypass the "one-user-at-a-time" restriction in Steam Family Sharing, allowing multiple people to play games from a shared library simultaneously.

Steam’s Subscriber Agreement strictly prohibits the use of third-party software to modify the client or bypass ownership checks. Valve (Steam's parent company) has sophisticated anti-tamper and anti-cheat systems (like VAC).