How to install and play games from the Epic Games Store on Steam Deck

In addition to Steam, you can also install the Epic Games Store and play games from there on the Valve Steam Deck. Here

An update on installing Epic Games on Steam Deck, plus accessing the SD Card

Here's How to Get the Epic Games Launcher On Steam Deck

Installing the Epic Games Store on the Steam Deck - Pi My Life Up

How to add non-steam games to steam deck WITH ARTWORK!

Heroic Games Launcher Steam Deck Guide

How to get your Steam Deck to access the Epic Games Store and more - The Verge

How to install Epic Games on Steam Deck and SteamOS

How to install Epic Games on Steam Deck and SteamOS

SteamOS limits you to playing only Steam games : r/SteamDeck

How to Install and Play Epic Games and GOG Titles on Your Steam Deck

Steam Deck, Epic, Origin, Ubisoft Setup