The .part02.rar extension indicates this is the second piece of a multi-part compressed archive.
Large game files are often split into smaller "chunks" (part01, part02, etc.) to make them easier to upload or download. How to Use It ICARUS.v1.2.12.100160.part02.rar
Files named with this specific string format often originate from third-party distribution sites or mirrors rather than official platforms like Steam, which handles updates seamlessly without rar parts. ICARUS.v1.2.12.100160.part02.rar