It's official: Steam's TV-friendly Big Picture mode is now live, out of beta, and ready for your living room. To celebrate, Valve is marking down a bunch of controller-friendly games on Steam.
Games on sale include Left 4 Dead, Limbo and Alan Wake. You can see the whole sale here.
Here's the full press release, via Valve:
December 3, 2012 — Valve today announced the public release of Big Picture, Steam's new mode that lets gamers access all of their favorite Steam games on a television from the comfort of their sofa. Big Picture has been designed to be used with a traditional gamepad, while also fully supporting keyboard and mouse input.
To celebrate the public launch of Big Picture, over thirty controller-friendly games will be on sale from now until December 10, with savings up to 75% off.
Access to the complete Steam store is included, as is the Steam Community. Big Picture is available worldwide in over twenty languages, including German, French, Russian, Korean, and Portuguese.
Gamers' existing games are all available in Big Picture. In addition to having the complete library of Steam games, each user's cloud files, Steam Workshop content, account information and preferences will be accessible automatically in the new mode.
Steam gamers may easily experience Big Picture on their televisions by connecting their PC or Mac, typically with a single HDMI cable. Big Picture also includes a new web browser designed for televisions and game controllers. It is accessible from anywhere within the Big Picture UI, and even while playing Steam games on a TV. It supports Big Picture's new method of typing with a gamepad, which is useful for entering URLs, filling out forms, chatting, and other functions.