This is a professional quality, FREE game ready asset, ready for commercial use in your Unity5 title.
If you're going for AAA art standard, or trying to give a feeling of true presence in your VR experience, this free example of photo-real environment objects will be perfect for the task.
Captured using official Canon lenses and professional studio equipment, this objects photoshoot was specifically been taken in bright overcast conditions, ensuring the textures are crisp, but also only contain ambient light data for perfect PBR setup. This 3D Captured object is retopologised, and given 3 levels of detail to keep everything at a high framerate. It has a very detailed normal map, baked from the original high poly photogrammetry mesh, so you really do have every detail, every crack and area of interest captured at the highest possible quality.
This fallen tree example has very simple box collision for optimum performance. If you need more accurate collision I suggest you add mesh collision to the lowest LOD of the model.
The scanned objects and their soil/grass base are a prefab made from separate exports, so if you wish to remove the base and just use the scanned asset on it's own that's very easy to do.
Feel free to download for free and include in you personal or commercial title with our compliments. You can support us continuing our mission to supply more of these commercial quality assets by visiting us here.