У вашего броузера проблема в совместимости с HTML5
Construction Kit Tool. Create any objects (, save it ,and import it on TerrainEngine. Fully dynamic and interact with all Terrain Systems (Fluids,Grass,Detail,Trees,etc...).
Create your voxel shapes and build objects. Final mesh generation algo is optimized. No invisible Triangles are generated.
Project : http://forum.unity3d.com/threads/174595-TerrainEngine-Marching-Cubes-Infinite-Procedural-Smooth-Terrain