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Proton is based on [[Wine]] and includes additional components like DXVK (a library that translates Direct3D 9, 10 and 11 calls to Vulkan on-the-fly), vkd3d-proton (a library that translates Direct3D 12 to Vulkan) and FAudio (an XAudio reimplementation). As a Steam Play feature, it avoids having to set up an additional Steam installation for Wine, which used to be the only way to get Windows-only Steam games working on Linux.
In addition to the Linux client for Steam, Proton is also a standard feature of the Linux-based SteamOS operating system, which is designed to be run on dedicated gaming systems using standard PC hardware, such as Valve's upcoming [https://www.steamdeck.com/en/ Steam Deck]. As of mid-2021, the only games that still don't work with Proton are mostly multiplayer games, using third-party anti-cheat systems that are either unaware of Proton as a legitimate gameplay tool or deliberately flagging it as an unfair advantage for some weird reason. Thankfully, the advent of the Steam Deck [https://www.theverge.com/2021/9/23/22690670/epic-eac-anti-cheat-linux-valve-steam-deck-support-games seems to be changing this for the better].
==Resources==
