IslandViz Virtual Reality's dependencies are JsonObject, QuickGraph4Unity, SteamVR, Triangle.NET C# port. All of these are included as sub-modules and are obtained automatically when the IslandViz repo is cloned recursively. Additionally, TextMesh Pro has to be downloaded from the Unity Assetstore and placed inside the IslandViz/Assets folder. Tested with Unity 2018.1.9f2