This Toolkit requires the SteamVR Plugin from the Unity Asset Store to be imported into your Unity project. The toolkit is heavily inspired and based upon the SteamVR Plugin for Unity3d Github Repo.
Valve maintains a Unity plugin to smoothly interface SteamVR with Unity. With SteamVR developers can target one API that all the popular VR headsets can connect to. The modern SteamVR Unity Plugin ...