Valve is working on "a bunch of controllers" and has filed patents for them, Gabe Newell confirmed in the second part of the latest Nerdist podcast.

"We probably have [patented them]," Newell said slyly in response to a question about filing the patents. "We're working on a bunch of controllers.

"The PC ecosystem sort've stopped evolving at a certain point," he added. "Given the success we've had, we need to start trying to be interestingly innovative."

Newell also noted that Hollywood has approached Valve about making feature films based on the company's properties, including the Left 4 Dead and Half-Life franchises. The company turned them down, however, because Valve felt the filmmakers' visions did not capture the spirit of their games.

"Part of the reason we started Source Filmmaker was that the ideas were so terrible," Newell said. "They didn't understand why people were fans of the things that we had. They weren't capturing it, they were picking some detail that jumped out at them without ever being enthusiastic or passionate about it and saying, ‘well, we'll do this.'

"There really were people who came to us with proposals of: ‘Okay, it's Half-Life 1, and there are horses, and it's a cavalry charge, and it's high-tech carbon armor on the horses,'" Newell added. "And we were like, ‘What the fuck are you talking about? Have you even played this?'"

Newell did confirm that Valve is working on an official 15-minute Team Fortress 2 piece using Source Filmmaker.