Steam reached a new milestone yesterday, June 29, with 8 million concurrent users on the platform.
Valve passed the 6 million users mark back in November 2012. This was followed by 7 million in early December, and finally 7.5 million over the Christmas period.
The new record of 8,020,813 was reached at midday PDT during the Steam Summer Sale Encore Day. The summer sale began last week and ends today, June 30.