Not by Steam, since it's not purchased there. Don't think Fanatical keep track of the purchase platform. In fact, only Humble was ever confirmed to do that, but whether they will keep doing that remains to be seen.

Steam might note the key was redeemed from the Linux client?

Steam keeps track on playtime by platform, so just play your games on Linux, you can check it out on steamdb.info after you've enabled it in Steam's privacy settings

Last edited by Jpxe on 22 January 2022 at 9:21 pm UTC

As I remember last time this question was asked the answer was that It counts for the first two weeks the time you spend on each platform and gets the one with the most time. If you don't run at all the game for two weeks then it defaults to windows.

Last edited by lucinos on 23 January 2022 at 11:14 am UTC

If recall it correctly, it still defaults to Windows even if you buy via a browser on Linux. Only counts as a Linux purchase from the start if you buy via the Linux Steam application. I am pretty sure that 75% of my library counts as Windows purchases, because I bought them "incorrectly".

In the end it does not really matter. Even if every purchase you made was counted towards Linux, the numbers would still be small. Valve knows it and the developers know it. So whenever they choose to support Linux, it's not because of the current numbers, it's because they believe in the future of the platform.

Quoting: lucinosAs I remember last time this question was asked the answer was that It counts for the first two weeks the time you spend on each platform and gets the one with the most time. If you don't run at all the game for two weeks then it defaults to windows.

But that only applies to purchases on steam, not key activations. I don't think those are in the purchase stats at all.