For many gaming platforms, the litmus test these days is whether or not they get official support in Unity's game engine -- land that and many developers (and by extension, gamers) are likely to give them a closer look. Valve just got a big credibility boost, then, as Unity is introducing native SteamVR support. If a virtual reality game runs on Unity's seemingly ubiquitous code, it's that much more likely to work with the HTC Vive and other SteamVR-friendly headsets. And much like the Unreal Engine, teams can edit in VR if they want to know what a scene will look like for players.