Valve has released a video via their YouTube channel where they demonstrate the upcoming Steam Controller and how it will work with a collection of already released games on the Steam platform.
The games that were demonstrated were Portal 2, Civilisation V, Counter Strike: Global Offensive and the indie title, Papers, Please. In the video, the demonstration is controlled on the beta version of the controller, where there is no touch pad in the middle of the controller. To find out how the controller will work, please check out the video below.
The Steam Controller will be releasing with the upcoming Steam Machine with an expected release window of 2014.