Linux and Proton

Of the seven rows on the platform board, this is the only one where the studio did not hedge. It told players who bought expecting Proton to ask for their money back.

“If you bought the game thinking you could play it through Proton, please refund.”

Stated around in Steam announcement — Pre-Load Live & Season 1 Changelog, 9 September 2026

What follows from it

• Desktop Linux: the store page lists Windows only, and the studio has confirmed the compatibility layer route does not work.
• SteamOS and the Deck: both run Windows titles through Proton, so they inherit the same answer. The Deck page covers the compatibility rating separately.
• Later in Early Access: the studio has framed this as the situation now rather than a permanent architectural decision. Nothing published commits to changing it.

Why a shooter ends up here

A refund instruction this blunt usually points at the anti-cheat layer rather than the renderer, because compatibility layers and kernel-level protection interact badly and the failure mode is a game that installs, launches, and then refuses to start a match. That is consistent with the pattern of reports around launch, and it is why the anti-cheat page is worth reading alongside this one. Note that the studio has not stated the cause, so this paragraph is context, not a confirmed explanation.

If you already bought it

The refund route is Steam’s standard one, and the studio has repeatedly encouraged refunds for players the game does not suit — the same language appears in its pre-order announcement used in Steam announcement — Pre-Order Now, 11 August 2026. That is unusually permissive framing, and it is worth taking at face value rather than assuming a fight.