TerraUnity

TerraUnity products are a set of tools for simulating and visualizing any part of The Earth using GIS Data acquired by NASA and other geospatial data sources. Apparently, in TerraUnity GIS Data Manipulation is limited in the means of Game Development. It's now your chance to design and create your game world by using real world data files and bring the scene visuals up to the level which gets as realistic as it can go like big companies do.