Linux Gaming

In this case it's a bit weird though, as the game lists Linux as supported platform, but obviously just ships the Windows build with Proton instead of having a native Linux build that uses open cross-platform APIs.

It being under supported platforms might mean that the developer officially supports proton and thus Linux. Hopefully they'd provide fixes if they somehow break the game on proton (e.g. they won't add an unnecessary launcher which breaks the game).