1st STEP:
Exported model as OBJ file with adding following settings:
- Saved as “Polygon mesh”
- Selected “Map Rhino Z to OBJY”
Terrain and objects were exported separately.
2nd STEP:
- Created a New Project in Unity 3D with Character Controller selected.
- In Import Settings for site mesh used “Generate colliders” to make first person controller not to fall through it.
- Imported models as new assets.
3rd STEP:
- Created sky by Importing Package “Skybox”. In Render Setup chose Skybox Material.
- Added Directional Light and turned on “Hard Shadows”.
- Created First Person Controller and put it above the terrain.
4th STEP:
Created materials, changed its properties in the Inspector. Applied materials to model, by dragging it from the Project View to objects
5th STEP:
- Imported Tree Creator and added Big Tree in scene.
- Imported Terrain Assets and added Palm in scene.
- Changed scale of some trees.
6th STEP:
Saved game by pressing “Build and Run”. Game is ready for play! 
