The Steam Deck is a handheld gaming computer developed by Valve and released on February 25, 2022. The device uses Valve's Linux distribution SteamOS, which incorporates the namesake Steam storefront. SteamOS uses Valve's Proton compatibility layer, allowing users to run Windows applications and games. In addition to handheld use, the Steam Deck can be connected to a TV or monitor through a docking station and be used like a desktop computer or home video game console. In desktop mode, users can install Linux-based third-party applications.