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 ...

Highly anticipated: The Junk Store plugin for Decky Loader allows Steam Deck owners to install games from the Epic Games Store and GOG.com alongside their Steam library. It has been a valuable tool ...

TL;DR: Microsoft's updated Xbox app for Windows PCs and handhelds unifies game libraries from Xbox, Steam, Epic Games Store, Battle.net, and GOG into a single interface. It enables seamless browsing, ...