Steam ハードウェア & ソフトウェア 調査
https://store.steampowered.com/hwsurvey/Steam?l=japanese
Windows 10 64 bit 54.40% -2.63%
Windows 7 64 bit 36.07% +3.69%
Windows 8.1 64 bit 3.59% -0.46%
Windows 7 1.71% -0.22%
Windows 8 64 bit 0.33% -0.04%
Windows 10 0.30% -0.05%
Windows XP 32 bit 0.21% -0.02%
Windows 8.1 0.07% 0.00%

(´・ω・｀)