SteamOS is Valve’s Linux-based operating system. It features a seamless user experience that’s optimized for gaming, while retaining access to the power and flexibility of a PC. SteamOS plays tens of thousands of games on Steam, and we are constantly testing the Steam catalog for SteamOS compatibility. It’s an open Linux platform that leaves you in full control, and you can install new software or content as you wish. By default, the Steam Client serves as a user interface and provides connectivity to our Steam online services, but you can still access the standard Linux desktop. Users should not consider SteamOS as a replacement for their desktop operating system.