Build your own Fortifications around your City with the Fortress Wall Pack.
The models can be used on Mobile or any other platform. It contains a Low Poly version and a more Detailed Model if supported.
It also has hand-painted High Quality textures.
You can build the Wall on a Grid based system, or any angle you want, as sown on the Screenshots.
It uses only one Texture, a 2048x2048 TGA