According to data from Valve's Steam Hardware and Software Survey for the month ending February 2014, Microsoft's latest operating system usage has increased to a combined total of 22.14% for both Windows 8 and Windows 8.1. During the previous month, the usage was at a total of 21.31%. Previous to that, it was 20.06%. This factors in both 32bit and 64bit of Windows 8 and Windows 8.1.
This data is collected by Valve's Steam game client, for those that did not know, and measures hardware and software stats on a monthly basis. This data indicates how much share an operating system has (among other stats) when it comes to gaming via Steam. According to this data, Windows 8 32bit has a share of 0.51%, which is a 0.04% drop compared to the previous month. Windows 8 64bit had a share of 9.45%, which is a 0.56% drop compared to the previous month.
Windows 8.1 32bit went up by 0.02% with a 0.36% share, while Windows 8.1 64bit climbed up 1.41% with a share of 11.82%. Windows 7 64bit, on the other hand, saw a 0.01% decrease to 50.55%. Based on these stats, we can see that more gamers are upgrading to Windows 8.1. Although, the majority of gamers are still sticking with Windows 7.
Just recently, Net Applications released their stats for the month of February and Windows 8 saw a combined market share of 10.68% with Windows 8.1.