FORTUNE -- Independent game developer Valve Software, which has created bestselling franchises like Half-Life, Portal, and Left 4 Dead, used the Consumer Electronics Show (CES) in Las Vegas to debut the first 13 Steam Machines to the world. The new PCs have been designed for the living room, rather than the office or den. And the plan is for these Steam Boxes to entice some gamers to invest in these upgradable devices instead of stagnant consoles like Sony's (SNE) PlayStation 4 or Microsoft's (MSFT) Xbox One.
Valve has added 10 million Steam accounts in the last three months for a total of 75 million PC gamers who use the free service to buy and download digital versions of games. Gabe Newell, co-founder and managing director of Valve, said the company regularly has 6 million people simultaneously on Steam. Valve recently introduced Big Picture mode to Steam, allowing PC gamers to do everything from play games to watch entertainment on an HD TV. By this fall Steam Machines will take things a step further, offering one box to rule them all.