Hello!
I read your description and see what you need the landscape for the game. i can do 3d model of landscape, cartoon or realystyic. write me for discus of details.
also i can draw 2d background and textures.
I work in zbrush, maya, unity, 3d max, sketch up, photoshop and ilustrator.
Rendering using keyshot, vray or other.
You can check my profile & Portfolio here and then make decision.
I am ready to start work now.
Price is discussed.