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The lack of Linux game availability during the lifetime of Steam Machines led Valve to invest development into Proton, a Linux-based compatibility layer to allow most Microsoft Windows-based applications and games to be run on Linux without modification.
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Steam Deck designer Steve Dalton said "There was always kind of this classic chicken and egg problem with the Steam Machine", as it required the adoption of Linux by both gamers and game developers to reach a critical interest in the machines to draw manufacturers in making them.
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Introduced in 2015, the platform did not sell well, and Valve quietly pulled back on it by April 2018, though stated the company remained committed to providing some type of open hardware platform. Valve's first foray into hardware was with the Steam Machine, a computer specification based on the Linux-derived SteamOS that could be adopted by any computer manufacturer to make systems optimized for running Steam and games from it.
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