Speaking to JuJu2Cast, Valve’s Greg Comer said, “you won’t see an exclusive killer app for SteamOS from us. We’re not going to be doing that kind of thing.”
This will also apply to third-party titles, Valve’s Anna Sweet told us. “Whenever we talk to third-party partners, we encourage them to put their games in as many places as possible, including not on our platforms," she said. "Because we think that customers are everywhere, and they want to put their games wherever customers are. That would go against our whole philosophy, to launch something that’s exclusive to SteamOS or Steam machines.”
“You won’t see an exclusive killer app for SteamOS from us. We’re not going to be doing that kind of thing.
Coomer added that “it would be pretty silly” if a third-party developer wanted “to limit their game to a certain platform.” He did note that small, independent studios who only have the resources to focus on one platform may inevitably make games that only run on SteamOS, “but that’s a very different thing.”