Halo and Destiny developer Bungie confirmed that Marathon will be launching March 5th, but it will most likely be unplayable on SteamOS Linux.
Bungie still have Destiny 2 completely blocked on all Linux platforms, something they have refused to budge on. So we're likely to be in the same position across all Linux platforms for Marathon too. They use BattlEye, which can be enabled for Linux - but they choose not to. This will be a recurring problem for the upcoming Steam Machine from Valve.
I've emailed the various different press teams working for Bungie multiple times to see if we could get a statement — none have replied to GamingOnLinux.
Since the pre-orders went up, Marathon has already become one of the top-selling items on Steam.

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If you are after an extraction shooter that works on Linux systems - ARC Raiders has been fine.
You can see this and more games on our dedicated anti-cheat page.




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