Modern professional geographic information systems significantly lagged behind in quality of 3D graphics, which complicates their full application in the existing conditions. The main differences of the principles of game engines work from the principles of creation of professional geographic information systems structure are considered in the article. These aspects interfere with construction of modern from the graphic point of view, geographic information systems. The analysis of the contradictions considered in article will allow minimizing them at application of game engines (for example, Unity) for reduction in cost and acceleration of production of modern GIS of new generation.