“RAR is likely more familiar and easier to deal with than XZ. RAR is a fairly obscure format in 2020 ... It was popular back when every byte mattered and archives needed to be split because modems.” MiSTer FPGA Forum · 5 years ago
You will need specific software to open it.
Users often prefer this format for its ability to split very large files into smaller parts for easier downloading.
Never extract a .rar file from an untrusted source without scanning it first. While the archive itself isn't harmful, the files inside (like .exe or .bat) can contain malware.
Often shared in .rar format due to high compression ratios for large textures or 3D models. Software Packages: Specifically bundled tools or patches.