This package offers additional assets helpful for example scenes or rapid prototyping. These assets are in addition to the more commonly-used assets located in StandardAssets.The extended assets package builds upon the standard assets and provides additional materials, fonts, audio files and other assets that are used by the MRTK example scenes. These assets can be freely used in your projects as temporary or final art. For more information visit https://aka.ms/mrtk3.extendedassets.package.