ProtonPlus is a free Linux app for installing and managing compatibility tools used by supported game launchers. It can help you add releases such as Proton-GE to Steam, update or remove tools, and select a compatibility tool for a game. It is a manager, not a launcher—and installing a tool does not guarantee that a particular game will work.
What ProtonPlus does
ProtonPlus provides a graphical way to find and organize compatibility tools from upstream sources, then place them in locations expected by supported launchers. Its listed tool categories include Proton, Wine, DXVK, and VKD3D. Which categories and releases are available depends on the launcher and provider. The project describes ProtonPlus as a GTK4 and libadwaita application released under GPL-3.0-or-later. ProtonPlus project
ProtonPlus does not replace Steam, Lutris, or another launcher. It manages tools those launchers can use; game compatibility still depends on the game, tool version, launcher setup, and other factors. Valve documents support for local Proton builds in Steam, but that is not a promise that every game will run. Valve Proton documentation
Supported launchers and tool availability
The project lists Steam, Faugus Launcher, Lutris, Heroic Games Launcher, Bottles, and WineZGUI. ProtonPlus only shows launchers it can detect as installed, and support can vary with the launcher’s installation type. The Flathub listing also describes ProtonPlus as a manager for compatibility tools across supported launchers. ProtonPlus on Flathub
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Do not assume every launcher offers the same catalog or controls. The releases shown come from upstream providers, so selection can differ by provider and may change over time. If a launcher or release is missing, check detection and installation requirements before concluding that ProtonPlus does not support it.
Install ProtonPlus
The project recommends installing the official Flatpak from Flathub. The project’s installation instructions give these commands:
flatpak install flathub com.vysp3r.ProtonPlus
flatpak run com.vysp3r.ProtonPlusNative installation is also documented as an option using Meson. Use the project’s current installation instructions for the applicable dependencies and build steps; they are not included here because the documented process may change.
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Install a tool through the graphical interface
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Open ProtonPlus and select a detected launcher.
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Open Tools and choose an available category, such as Proton or Wine.
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Select the upstream release or variant you want, then choose the install action.
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After installation, use the installed-tools view to update or remove releases as needed.
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For Steam, ProtonPlus also provides a Games view for changing compatibility tools and launch options for individual games or multiple games. Tool availability and game-management features depend on what ProtonPlus detects and supports in your setup.
Choose Proton-GE or another tool for a Steam game
To use a locally installed Proton build in Steam, install it with ProtonPlus, then select it in Steam’s compatibility settings for the game. The exact Steam menu labels can vary by client version, so look in the game’s properties for its compatibility-tool setting rather than relying on a fixed menu path.
Valve’s local-build instructions use Steam’s compatibilitytools.d directory. Steam must be restarted to detect a newly installed local build. Valve Proton documentation If Steam does not offer the new build, close the game and restart Steam before checking the game’s compatibility setting again.
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Use ProtonPlus from the command line
The CLI supports listing detected launchers and installing, updating, or uninstalling tools. First list launchers: ProtonPlus uses the launcher IDs it reports as the IDs accepted by subsequent commands. Consult the project’s current CLI documentation for exact command syntax and available options. ProtonPlus project documentation
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A Flatpak launcher is missing: The project says the corresponding launcher’s Flatpak application data must exist, and ProtonPlus must itself be installed from the official Flatpak package for Flatpak launchers to be detected.
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A Steam library or game is missing: Make sure custom Steam library locations are visible to the ProtonPlus installation. A Flatpak installation may not automatically see every path on the system.
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An install or update is blocked: Close games currently using the compatibility tool, then retry the operation.
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Steam does not show a new local tool: Restart Steam so it can detect the newly installed build.
These setup notes come from the ProtonPlus project and Valve’s Proton documentation; the precise permissions and paths available can depend on how the launcher and ProtonPlus were installed.
Use ProtonPlus on Steam Deck
The ProtonPlus documentation includes Steam Deck guidance: focus a text field and press Steam + X to open the on-screen keyboard. That is a text-entry tip, not evidence that every tool or game works on Steam Deck. The project’s general detection and compatibility requirements still apply. ProtonPlus project documentation
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