After some recent weirdness where March saw a big drop, the Steam Hardware & Software Survey for May 2023 is now showing the Linux share at a multi-year high.

Checking back over our Steam Tracker where we're keeping tabs on it over time, we've not seen the Linux user share being as high as it is right now in at least 6 years. The Linux user share is now on 1.47% with macOS on 2.39% and Windows at 96.14%,

When filtering the results over to just Linux here's the current most popular distributions for Steam gaming:

In terms of absolute numbers we can take an educated guess here based on the last time Valve gave out their monthly active users, which they said was 132 million back in March 2022. So based on that 1.47% it would mean around 1,940,400 estimated monthly active users for Linux. However, Valve did not give out the number for the past year, and we know Steam is growing all the time, so in reality it's probably much higher.