Windows 8.1 is seeing success among PC gamers. Data from Steam users now shows that Windows 8.1 (x86/x64) is being used by 6.34% of all Steam users. This is a nearly 5% increase from users just one month ago. Windows 8.1 is now being used by more people on Steam than Mac, Linux, and Windows Vista users. Windows 8/8.1 accounts for 18.06% of steam users, while Windows 7 still commands 64.38%, and Windows XP ~6.45%.
Gabe Newell, co-founder of Steam, and former Microsoft employee has been fairly open about his dislike of Windows 8.