A Decky Loader plugin that brings together Steam, Epic Games Store, GOG, Amazon Games, Ubisoft Connect, and Xbox Cloud Gaming in a single library experience on your Steam Deck.

• Features
• Screenshots
• Prerequisites
• Installation
• Getting Started
• Documentation
• Known Limitations
• Troubleshooting
• Languages
• Building
• Tech Stack
• Credits
• Support
• License
• Author
• Disclaimer

• Unified library tabs - Browse Steam, Epic, GOG, Amazon, Ubisoft, Xbox Cloud Gaming, Installed, Great on Deck, and Non-Steam from one place.
• Steam-native install, update, and launch actions - Manage supported games directly from the game details view, with progress and status feedback.
• Shortcut-based sign-in in Gaming Mode - Authenticate Epic, GOG, Amazon, Ubisoft, and Microsoft without leaving the Steam UI.
• Flexible install locations - Use internal storage, SD card, or a validated custom install directory.
• Launch options and Proton control - Preserve custom launch options across syncs, installs, and Proton toggles. Supports wrappers, MangoHud, LSFG, PROTON=, and PROTONPATH=.
• Artwork and richer metadata - Pull cover art, icons, banners, store links, Metacritic data, and Great on Deck style compatibility info where available.
• Cloud saves - Epic and GOG cloud saves are supported, including conflict prompts when both local and cloud saves exist.
• Store-specific extras - GOG language selection, Epic/GOG DLC auto-downloads, Epic offline mode, GOG Galaxy / Comet support for compatible titles, and xCloud "Play on Cloud" support through Edge.

• Decky Loader must be installed on your Steam Deck.
• Microsoft Edge is required for store sign-in and Xbox Cloud Gaming. If it is missing, Unifideck will prompt you to install it.
• All other store CLIs and helper tooling are bundled with the plugin.

Decky Loader Installation Guide

1. Download the latest plugin ZIP from the Releases page.
2. Open Quick Access Menu (three dots button).
3. Navigate to Decky -> Settings (gear icon).
4. Enable Developer Mode if it is not already enabled.
5. Click Install Plugin from ZIP.
6. Select the downloaded ZIP file.

If an update gets stuck on installing plugin, uninstall the current Unifideck plugin and install the latest ZIP again.

https://www.youtube.com/watch?v=lP-90uYd72w

1. Open the Quick Access Menu and launch Unifideck.
2. Connect the stores you want to use.
3. Set your default install location if you want internal storage, SD card, or a custom path.
4. Run Sync Libraries or Force Sync.
5. Restart Steam when prompted so new shortcuts and artwork are applied.
6. For Ubisoft titles purchased through Epic, complete the one-time account link at epicgames.com/id/link/ubisoft.

Installed games are playable immediately after install. The Steam restart is still needed after sync or cleanup so the library refreshes fully.

• FAQ - Common issues, workarounds, and version-specific fixes collected from releases, code comments, and GitHub issues.
• Launch Options Guide - Custom parameters, wrappers, LSFG, and per-game launch tweaks.
• Proton Compatibility Notes - PROTON=, PROTONPATH=, and compatibility troubleshooting.

• Unifideck replaces Steam's default All Games, Installed, and Great on Deck tabs, so Steam's standard sort and filter behavior is not preserved there.
• With TabMaster installed, Unifideck skips custom tab injection and relies on [Unifideck] collections instead.
• Steam still needs a restart after sync or cleanup so new shortcuts and artwork fully apply.
• Xbox Cloud Gaming support is streaming-only and depends on Microsoft Edge.
• Cloud saves currently cover Epic and GOG only, and game-level support varies.
• Some titles still need manual Proton experimentation or store-specific workarounds.
• Not every game has SteamGridDB artwork or complete metadata.
• For Ubisoft, choose your Proton version before installing. Changing Proton after install can invalidate the prefix and force a reinstall.

For a longer list of release-specific problems and fixes, see the FAQ.

Uninstall the current plugin and install the latest ZIP again. This was the recommended workaround for the 0.6.0 -> 0.6.1 transition.

Run Force Sync if needed, then restart Steam when prompted so shortcuts and artwork are reloaded.

Sign into Epic in a regular browser first, accept any pending legal updates, then retry in Unifideck.

Check available storage, make sure the store account is still connected, and inspect ~/.local/share/unifideck/launcher.log.

Install Microsoft Edge when prompted. After the first successful Microsoft sign-in, you may still need to click Play via Cloud once inside the xCloud home screen to finish OAuth.

Make sure your Epic and Ubisoft accounts are linked at epicgames.com/id/link/ubisoft. If problems continue, clear ~/.local/share/unifideck/chromium-auth, ~/.local/share/unifideck/ubisoft_installer_cache, and the Ubisoft prefixes under ~/.local/share/unifideck/prefixes/, then try again.

• Decky/backend log - /home/deck/homebrew/logs/Unifideck
• Launcher/runtime log - ~/.local/share/unifideck/launcher.log
• Edge/browser log - ~/.local/share/unifideck/chromium-auth.log

Unifideck currently ships with English (US), French, Brazilian Portuguese, Russian, Japanese, German, Spanish, Italian, Simplified Chinese, Korean, Dutch, Polish, Turkish, and Ukrainian.

To add a new language, create a JSON file in src/i18n/locales/ using en-US.json as the template and wire it into the language selector.

To build the plugin from source:

1. Install dependencies: pnpm install
2. Build the frontend bundle: pnpm run build
3. Build the plugin package:
   • standard Decky / fork workflow: ./.vscode/build.sh or the VS Code build-plugin task

For frontend watch mode, use pnpm run watch.

• Frontend - React, TypeScript, Rollup, @decky/api, @decky/ui, i18next
• Backend - Python, Decky Loader RPC, CDP-based auth and browser helpers
• Store tooling - legendary, gogdl, nile, comet, winetricks, umu-launcher
• Services and data - SteamGridDB, Epic/GOG/Amazon/Microsoft APIs, Microsoft Edge, Metacritic, compatibility metadata

This project builds on a lot of open source work and community help.

• Platform and UI - Decky Loader, @decky/api, @decky/ui, and the SteamDeckHomebrew community
• Store and runtime tooling - legendary, gogdl, nile, comet, winetricks, umu-launcher, and SteamGridDB
• Reference projects and patterns - TabMaster, SteamGridDB Decky, ProtonDB Decky, Heroic Games Launcher, and Junk-Store
• Special thanks - @src893, @xXJSONDeruloXx, @moi952, @Lazer-zx5, @buddax2, @Grails125, DeckWizard, u/EnTei7K, u/IN50MNIAC, derrod, and the Discord testers for invaluable feedback.

If you want to support development or keep up with releases:

• Become a GitHub Sponsor
• Buy me a coffee on Ko-fi
• Join the Discord

GNU General Public License v3.0 or later - see LICENSE for details.

Numan Mubarak ([email protected])

This is an unofficial third-party tool. It is not affiliated with Valve, Epic Games, CD Projekt / GOG, Amazon, Ubisoft, or Microsoft.