in absolute terms with the continued growth of the Steam user base, 2~3% was rather healthy considering all of its bumps over the past decade.

But Valve just published the Steam Survey results for March 2026
and they have never been so incredible for Linux... 5.33%!

Steam on Linux was never above 5% and easily an all-time high for the Linux gaming marketshare, especially in absolute numbers. It was a massive 3.1% spike in March
while macOS also jumped surprisinfly by 1.19% to 2.35%.
The Steam Survey numbers show Windows losing 4.28%, down to 92.33%.

Part of the jump at least appears to be explained by Valve correcting again the Steam China numbers.