Steam game service doubles sales, reaches 5M concurrent users

Today Valve disclosed their Steam sales data Today Valve disclosed their Steam sales data from last year, and once again their units sales have increased by more than 100 percent for the seventh year running. Steam now houses over 1,800 games for its consistently growing user base of 40 million accounts.
 
The infamous, wallet-emptying Steam Holiday Sale was responsible for the most concurrent users in Steam’s history, reaching over 5 million users at once. The amount of data transferred by the digital distribution service doubled over last year’s, serving over 780 petabytes, or 780,000 terabytes.
 
Steamworks was also a major success in 2011. 14.5 million copies of the 400 currently available Steamworks games were registered last year, an increase of 67 percent from 2010. In-game item trading, a service that started in Team Fortress 2, generated over 19 million traded items. Steam’s support of free-to-play games began in June of 2011, launching with only 5 titles, but increasing that number to 18 by the year’s end, with a promise of many more to come.
 
last year, and once again their units sales have increased by more than 100 percent for the seventh year running.