Grand Theft Auto V was one of the top ten most played games on Valve’s Steam Deck handheld this past week. It’s been in the top twenty for at least two years. But as of today, Valve now lists the game as “unsupported” — because developer Rockstar mysteriously broke compatibility with Valve’s handheld for its online modes.

GTA V has consistently ranked among the top 20 most-played games on the Steam Deck for at least two years, and it even remained in the

Grand Left Steam Deck 5.

Thanks to a recent update, Grand Theft Auto 5 and Grand Theft Auto Online can't be played on the Steam Deck.The Latest Tech News, Delivered to Your Inbox

GTA Online has been given BattlEye anti-cheat software a decade after it initially launched on PC, and as a result, players can no longer play on their Steam Decks.

Surprisingly, Rockstar have now added BattlEye anti-cheat to Grand Theft Auto V, and sadly it seems they have not enabled the support for Linux desktop and Steam Deck with Valve's Proton.

Fans are frustrated with the rating change following the addition of BattlEye anti-cheat, which is incompatible with the Linux-based SteamOS.

You may have noticed that Grand Theft Auto V is no longer verified on Steam Deck. That's seemingly because of the BattlEye new anti-cheat software for GTA Online, which rolled out earlier this week. As Rockstar explains in its official FAQ,

Recently, we had the news that Rockstar updated Grand Theft Auto V to include BattlEye anti-cheat, and they have not enabled the Linux / Proton support that BattlEye offers. With that change, the online mode is now broken for Linux / Steam Deck.