Steam touts 2011 sales, 40 million accounts

Valve is celebrating a successful 2011, with its seventh straight year of more than 100% sales increases. The developer also revealed that the recent holiday sale pushed the number of simultaneous users over the five million mark, and a handful of other impressive stats.

The service now boasts 1,800 games and 40 million accounts, and in 2011 it pushed out 780 petabytes of data -- double the amount from 2010. 14.5 million copies of Steamworks games were registered, a 67% increase over 2010, and the suite is now included in more than 400 games.

All of this good news comes amid increasing competition in the market, from services like OnLive and EA's launch of the Origin online store. But with such successful numbers under its belt, the team at Valve probably isn't too worried.

"Steam and Steamworks continues to evolve to keep up with customer and developer demands for new services and content," said company president Gabe Newell in the announcement. "Support for in-game item trading prompted the exchange of over 19 million items. Support for Free to Play (FTP) games, launched in June, has spurred the launch of 18 FTP titles on Steam, with more coming in 2012. Looking forward, we are preparing for the launch of the Big Picture UI mode, which will allow gamers to experience Steam on large displays and in more rooms of the house."