Easy Anti-Cheat is, as the name implies, a cheat prevention tool. It's utilized by a massive amount of online PC games to prevent hackers from becoming too prevalent, including the likes of Halo: The Master Chief Collection, Fortnite, Fall Guys, Dragon Ball FighterZ, and others. Due to the number of games that make use of it, it became a concern, as the upcoming Steam Deck would need to support Easy Anti-Cheat in order for any of the games to function on the device. Developers were uneasy about the situation, too, believing it to be a difficult process to enable on games.
Fortunately, both Valve and Epic Games, the latter being the owner of Anti-Cheat, have worked together to ensure that it's as easy as possible to get those games running on the Steam Deck. Today, Valve will begin testing EAC titles that have enabled Proton support and adding them to the Steam Deck compatibility list.
That's it for today. We're very excited to be able to make this announcement as it means partners can continue to use their existing cheat prevention tools while adding support for more amazing games on Steam Deck. Please let us know in the forums if you have any questions.