YouTube user Trial By Game released several videos demonstrating the capabilities of the Steam Controller in titles such as Dota 2, Metro Last Light, Typing of the Dead and Surgeon Simulator 2013.
You can watch the video above to see how the Steam Controller functions with Dota 2 in a match. Videos for the aforementioned games are posted below. Trial By Game also has videos exploring the controller's layout and key binding and its sensitivity options on his YouTube channel.
Valve announced the Steam controller in September. The controller features circular trackpads for a player's thumbs and is meant to be sensitive enough to accommodate games typically playable with a keyboard and mouse. Valve has previously released a video featuring the controller in action with Civilization 5, Papers, Please and Portal 2.
The Steam Controller is expected to launch in 2014, along with Steam Machines and SteamOS.