Unity can already publish Oculus-compatible games for Windows, Mac and Linux. I think Unreal Engine can too. Big game studios use those engines. SteamOS might

Unity can already publish Oculus-compatible games for Windows, Mac and Linux. I think Unreal Engine can too. Big game studios use those engines. SteamOS might be able to optimize for the Oculus Rift in ways that Windows and Mac OS can't. I guess we'll see.