Valve today disclosed its plans for a new “big picture” mode of Steam which will offer controller support and navigation designed for television interaction. Big picture mode will enable gamers to enjoy Steam and their library of Steam games on more screens throughout the house.

“Our partners and customers have asked us to make Steam available in more places. With the introduction of Steam on the Mac, and soon in Portal 2 on the PS3, we’ve done just that,” said Doug Lombardi, VP of marketing for Valve. “With big picture mode, gaming opportunities for Steam partners and customers become possible via PCs and Macs on any TV or computer display in the house.”

More details are expected to arrive later this week.