Thank you for your reply. I am using Unity 2017.2
Thank you again but i already have blender installed. I think this is a import/export package issue. But i couldn't figured out yet.
I opened models with Blender and made blender for default .blend opener. And then I opened Unity-Open and select the file path for assets it worked. I played like 1 hour and it was worth it. Just one suggestion, i will try to add a checkpoint system after i study your code. Thank you again. Have a nice day :)