Info:
This is my test 3d model of low-poly bridge, I'm trying to do a very low-poly model, but to make it look good (not so rough), and how I see it works.

I created this model with texture, and blender file size 474,1 KB, but when I export into OBJ, file size 21,6 KB (wow, I just can't imagined that), and .obj file with texture size 103,1 KB.

Any way, I'm glad of result, and I upload here maybe somebody will be need it, and used in good game...