Heroic Games Launcher
Whether you're looking for a simple way to get Epic Games and GOG titles up and running on the Steam Deck or simply want a convenient avenue to create Steam shortcuts, this game launcher is worth checking out.
When you first open up Heroic Games Launcher in desktop mode, it'll ask you to log in with your Epic or GOG accounts and automatically fetch your games. Once you've done that, the app will present an intuitive interface where you can access and play your titles. If you have a game outside of Epic or GOG, the app will allow you to add it and launch it just as easily.
Once you click on a title, it'll download the necessary files to your computer and then install it. For the most part, the application will determine which version of Wine to use for a specific game, but you can also change that in a game's settings. You can even choose to run the game through Lutris, an open-source emulator built for Linux that automatically manages some of the messier technical aspects of emulation.
Heroic Games Launcher has plenty of other features that you'll likely find useful as well. For instance, you can customize the launcher's look and feel, and it has an option to add desktop icons for your games. There's even a notification bar for game updates, and it's possible to check a game's status without opening up the full launcher.