The Epic Games Store isn't natively available on the Steam Deck. There were some fiddly methods to get it working, but the Decky Loader program will allow you to add it to the Steam Deck's Gaming Mode without fuss as part of the Steam library. Moreover, the Decky Loader method will keep the Epic Games store app updated and running smoothly thanks to a clever developer on GitHub named Moraroy. This guide will take you through the steps of installing Decky Loader, activating Testing Mode, and installing the NonSteamLauncher to launch the Epic Games Store on the Steam Deck.