Valve's Steam Deck has transformed portable gaming by offering a robust handheld PC experience right out of the box. While the device integrates seamlessly with your Steam library, many players also possess extensive collections on rival storefronts. Fortunately, the open nature of SteamOS allows users to expand their gaming horizons and access external platforms without undergoing overly complex modifications.
Switching to Desktop Mode and Preparing the System
To begin the installation process, you must exit the standard handheld interface and enter the system's underlying operating system. Hold down the physical power button or press the Steam button to bring up the power menu, then select the option to switch to Desktop Mode. This environment functions like a traditional computer and grants you access to system applications and web browsers.
Once the desktop loads, it is highly recommended to connect a physical keyboard and mouse for easier navigation. You can open the pre-installed web browser to download installer files directly from external storefront websites. Alternatively, you can utilize the system's built-in software repository to acquire specialized tools that streamline the entire management process.
Installing the Heroic Games Launcher
The most efficient way to access your non-Steam library is through an open-source tool designed specifically for Linux environments. Open the Discover Software Center, which is represented by a blue shopping bag icon located on your taskbar. Search for the Heroic Games Launcher and click the install button to add it to your handheld computer.
This specialized launcher provides a unified interface that naturally aggregates titles from multiple external accounts. After launching the application, navigate to the log-in section and enter your credentials securely to sync your library. The interface allows you to browse your catalog, manage cloud saves, and choose precise installation directories with ease.
Configuring Compatibility Settings for Optimal Performance
Running games designed for traditional operating systems on a Linux-based handheld requires a translation layer to ensure stability. Within the launcher settings, you must select an appropriate version of Proton or Wine to handle the background translation. Experimenting with different versions can drastically improve framerates and fix visual glitches across individual titles.
Furthermore, managing directory locations properly ensures that you do not accidentally overwhelm your internal storage drive. You can easily configure the software to direct all new game installations to a high-speed MicroSD card instead. This setup preserves your internal drive space for essential system files and standard cache data.
Adding External Games back to Gaming Mode
To ensure a seamless handheld experience, you should integrate your newly installed titles directly back into the primary gaming interface. Open the desktop version of Steam, click on the games menu at the top, and select the option to add a non-Steam game. Check the box next to your new launcher or specific titles to include them in your primary library.
Once completed, double-click the Return to Gaming Mode shortcut located directly on your desktop. Your external titles will now appear under the non-Steam category in your main handheld library, complete with controller layout support. This integration allows you to adjust performance settings and overlay menus just as you would with native titles.
