While its only been a few months since Valve added support for Mac games in its Steam game download service, the latest results from Steam's voluntary hardware survey still show that Mac gamers comprise only a fraction of Steam's total audience. The July survey results show that only 5.07 percent of Steam users have Mac-based operating systems.

However the latest Microsoft operation system, Windows 7, is gaining in market share with just over 40 percent of Steam users recorded as having the OS installed on their systems (both 32-bit and 64-bit versions). Windows XP users, while losing market share, is still installed in a large fraction of Steam players' PCs with a total of over 33 percent (again with both 32-bit and 64-bit users).