Valve has announced that Steam has now over 25 million active users. Those 25 million users managed a peak concurrency 2.5 million games players, racking up more than 13 billion player minutes per month.

But of course, the proof is in the profits: there are now over 1,000 games available on Steam, distributed by over 100 developers and publishers — big-boys and independents alike. All told, Steam sold 205% more units in 2009 than the previous year.

Gabe Newell, the president of Valve, was quick to add that Steam has grown immensely each and ever year of its existence. Steam’s only been around for five years, but in that time there have been numerous improvements and additions to the range of products provided by Valve, resulting in a greater-than-100-percent increase in sales year-over-year since its creation.