on porting other games to Ubuntu and expanding to other Linux distributions. Linux games are also eligible for SteamPlay availability. Versions of Steam working under Fedora and Red Hat Enterprise Linux were released by October 2013. The number of Linux-compatible games on Steam increased from over 500 in June 2014, to over 1,000 by March 2015 and to over 2,000 in March 2016. In February 2019, Steam for Linux had 5,800 native games compared to over 30,000 including aforementioned and was described as having "the power to keep Linux [gaming] alive" by Engadget. In August 2018, Valve released a beta version of Proton, an open-source Windows compatibility layer for Linux, so that Linux users could run Windows games directly through Steam for Linux, removing the need to install the Windows version of Steam in Wine. Proton is composed of a set of open-source tools including Wine and DXVK among others. The software allows the use of Steam-supported controllers, even those not compatible with Windows. Released in February 2022, Valve's handheld computer, the Steam Deck, runs SteamOS 3.0 which is based on the Arch Linux distribution, and uses Proton to support Windows-based games without native Linux ports. To that end, Valve worked with various middleware developers to make sure their tools were compatible with Proton on Linux and maximize the number of games that the Steam Deck - and by extension other Linux-based installations - would support. This included working with various anti-cheat developers such as Easy Anti-Cheat and BattlEye to make sure their solutions worked with Proton. To help with compatibility, Valve developed a classification system that they will populate to rank any game as to how well it works as a Linux native solution or through Proton. Support for Nvidia's proprietary deep learning super sampling (DLSS) on supported video cards and games was added to Proton in June 2021, though this is not available on the Steam Deck which is based on AMD hardware. Steamworks on consoles At E3 2010, Newell announced that Steamworks would arrive on the PlayStation 3 with Portal 2. It would provide automatic updates, community support, downloadable content and other unannounced features. Steamworks made its debut on consoles with Portal 2 PlayStation 3 release. Several featuresincluding cross-platform play and instant messaging, Steam Cloud for saved games, and the ability for PS3 owners to download Portal 2 from Steam (Windows and Mac) at no extra costwere