SteamOS is based on Arch with customization by Valve to make it immutable and a few other tweaks. In theory Valve will release SteamOS Holo (the version used on SteamDeck) for usage on Desktop at some point, but that hasn’t happened yet. In the meantime you can achieve very similar results to SteamOS a variety of ways. Depending on if you care about immutability or not there’s a number of non-Arch distros and even a install script (astOS) that can install Arch configured in an immutable fashion similar to what SteamOS does. There’s also a number of non-immutable gaming focused distros the most prominent of them being Manjaro. Any of them once you install Steam will function very similar to each other and SteamOS.
Can SteamOS be installed on a desktop or is it only for the handhelds?
SteamOS is based on Arch with customization by Valve to make it immutable and a few other tweaks. In theory Valve will release SteamOS Holo (the version used on SteamDeck) for usage on Desktop at some point, but that hasn’t happened yet. In the meantime you can achieve very similar results to SteamOS a variety of ways. Depending on if you care about immutability or not there’s a number of non-Arch distros and even a install script (astOS) that can install Arch configured in an immutable fashion similar to what SteamOS does. There’s also a number of non-immutable gaming focused distros the most prominent of them being Manjaro. Any of them once you install Steam will function very similar to each other and SteamOS.