A few games on sale are Tiny and Big: Grandpa's Leftovers, Castle Crashers, Portal 2 (now with split-screen), Left 4 Dead 2, A Virus Named Tom and Mark of the Ninja. There are more than 30 games on sale, all of them featuring full controller support.
Steam breaks down games into full and partial controller support: There are 41 games with full support and 387 with partial, though on the Big Picture sale page Steam lists 70 with full and 851 with partial, so there may be some hiding in the rafters. All games are accessible in Big Picture mode, though not all support gamepads, of course.
One-Week Steam Sale on Big Picture Friendly Games
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.
For more information, please visit http://www.steampowered.com/bigpicture.