Modern visualization and multimedia platforms, such as Unity, provide immersive interaction for HEP experiment data analysis. In this work, we present the method for importing the detector geometry, solids hierarchy, and materials from GDML format directly to Unity. This method is based on parsing files in GDML format and generating the geometry using mesh generation algorithms and Constructive Solid Geometry methods. The provided method is applied to the BM@N experiment at NICA accelerator complex in Joint Institute of Nuclear Research and can be used in virtual reality and augmented reality applications for data analysis and outreach events in high energy physics experiments.