Halo: The Master Chief Collection now has support on Steam Deck, making it possible for players to enjoy the game on the go. The announcement was made on the official Halo Twitter account, and in the video, you can see the game starting up on a Steam Deck accompanied by Halo memorabilia. The support includes the campaign, in addition to modes that require Easy Anti-Cheat, such as multiplayer and custom games.
If you encounter any issues while playing the game on Steam Deck, 343 Industries has requested that you capture a screenshot or record the problem and submit a Flag Report ticket. Do note that they will not be able to provide troubleshooting for Steam Deck-related issues submitted via a Bug Report ticket.
While the Halo MCC is now playable on Steam Deck, Halo Infinite hasn’t been verified but is still playable on it. The known issues for playing Halo: The Master Chief Collection on Steam Deck include launching the game with the opposite launch option when selecting one of the available Anti-Cheat launch options. You must select the “Anti-Cheat Disabled” launch option to access multiplayer matchmaking and the Custom Game Browser to work around this issue.
Keep in mind that playing Campaign Co-op or Spartan Ops with players on PC or Xbox consoles when using Steam Deck isn’t possible, and attempting to do so may result in players accessing gameplay, but all sessions will eventually experience a “Connection Interrupted” error or a similar disconnection.
Before playing input-restricted matchmaking on Steam Deck, players may need to change their preferred input device in-game to Gamepad. To do this, launch Halo: MCC and select Options & Career from the main menu, then select Settings and move to the Control tab to change the preferred input device to Gamepad.
Overall, the addition of support for Steam Deck broadens the possibilities for playing Halo games, giving fans a new way to enjoy the franchise outside their consoles or PCs.
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According to https://www.gamespot.com/articles/halo-the-master-chief-collection-is-now-playable-on-steam-deck/1100-6513082/
The material in this article is written on the basis of another article.