https://www.3dbuzz.com/training/view/unity-fundamentals/physics/12-character-joint http://www.viewzone.com/onstott33.html   http://catlikecoding.com/unity/tutorials/hex-map-1/ Add water to cells. Triangulate a water surface. Create shore water with foam. Make water and rivers play nice. http://www.ultimategametools.com/products/rope_editor