The .7z extension indicates the file was created using 7-Zip , an open-source high-compression utility.
These technical archives can be significantly larger (several gigabytes) compared to media archives, as they contain high-resolution textures and complex geometry. 3. Software and Technical Backups 31-40.7z
In professional and hobbyist creative circles, "31-40.7z" often denotes a subset of a larger asset pack. 31-40.7z