According to an annual press release by Valve Corporation, their Steam digital content distribution service surpassed 25 million active accounts, growing 25% over previous year numbers.
Other stats:
- those 25 million accounts experienced/played an average of 3,000,000,000 minutes per month (= nine million days of time each month)
- Steam hosts over 1000 games from more than 100 developers and publishers from around the world.