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.

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

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.

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.

Grand Theft Auto V ( GTA V), a game that has consistently ranked among the top 20 most-played games on Valve's Steam Deck for over two years, is now listed as "unsupported" by Valve. This unexpected change comes after Rockstar Games,

The addition of BattlEye anti-cheat to GTA has made the game incompatible with the Steam Deck. Steam Deck players can no longer access the GTA Online portion of the game. Rockstar is blaming Valve, despite other BattlEye games being compatible with the platform.

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,