Steam is a digital distribution, digital rights management, multiplayer and communications platform developed by Valve Corporation. It is used to distribute games and related media online, from small independent developers to larger software houses. Steam also has community features, automated game updates, in-game voice and chat functionality.
As of October 2011, there are over 1,400 games available through Steam, and 35 million active user accounts. Although Valve never releases sales figures, Stardock, the previous owner of competing platform Impulse, estimated that, as of 2009, Steam had a 70% share of the digital distribution market for video games. Many major publishers have large catalogues available on Steam, including Bethesda Softworks, Activision, Rockstar Games, Square Enix, 2K Games, Telltale Games and Electronic Arts.
You know what my days used to be like? I just tested. Nobody murdered me. Or put me in a potato. Or fed me to birds. I had a pretty good life. And then you showed up. You dangerous, mute lunatic. So you know what? You win. Just go. Don't come back.