Unable to launch on Steam Deck

Redacted8540

February 26, 2026 19:49

Hello. I am attempting to play the game on Steam Deck (which runs on SteamOS), but every time I launch the game, it closes. This may be due to BattlEye Anti-Cheat not having its Linux Support enabled.

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Official comment

Bungie Support
Marathon Support

February 26, 2026 20:39 (Edited February 26, 2026 20:40)

Hi there,

Thanks for reaching out.

According to our System Requirements page, please note that Windows 10 or 11 is required to run Marathon on PC. SteamOS is not supported. We apologize for any inconvenience this may cause.

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