The file is a segment of a split RAR archive, likely containing version 1.008 of the game PC Building Simulator 2 (PCBS2). Since this is only "part 2," it cannot be opened on its own; you must have all associated parts (e.g., part 1, part 3, etc.) in the same folder to successfully extract the contents.
To make this "feature" useful, you should focus on an to ensure the download is valid before you waste time trying to install it. Proposed Feature: "Archive Integrity Shield" sc23219-PCBS2v1008.part2.rar
Automatically scans your folder and alerts you if "part 1" or "part 3" is missing before you attempt to open the file. The file is a segment of a split